Renesas 7200 Series User manual

Regarding the change of names mentioned in the document, such as Mitsubishi
Electric and Mitsubishi XX, to Renesas Technology Corp.
The semiconductor operations of Hitachi and Mitsubishi Electric were transferred to Renesas
Technology Corporation on April 1st 2003. These operations include microcomputer, logic, analog
and discrete devices, and memory chips other than DRAMs (flash memory, SRAMs etc.)
Accordingly, although Mitsubishi Electric, Mitsubishi Electric Corporation, Mitsubishi
Semiconductors, and other Mitsubishi brand names are mentioned in the document, these names
have in fact all been changed to Renesas Technology Corp. Thank you for your understanding.
Except for our corporate trademark, logo and corporate statement, no changes whatsoever have been
made to the contents of the document, and these changes do not constitute any alteration to the
contents of the document itself.
Note : Mitsubishi Electric will continue the business operations of high frequency & optical devices
and power devices.
Renesas Technology Corp.
Customer Support Dept.
April 1, 2003
To all our customers

MITSUBISHI 8-BIT SINGLE-CHIP MICROCOMPUTER
740 FAMILY / 7200 SERIES
7220
Group
User’s Manual

keep safety first in your circuit designs !
●Mitsubishi Electric Corporation puts the maximum effort into making semiconductor
products better and more reliable, but there is always the possibility that trouble
may occur with them. Trouble with semiconductors may lead to personal injury,
fire or property damage. Remember to give due consideration to safety when
making your circuit designs, with appropriate measures such as (i) placement
of substitutive, auxiliary circuits, (ii) use of non-flammable material or (iii) prevention
against any malfunction or mishap.
Notes regarding these materials
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●Please contact Mitsubishi Electric Corporation or an authorized Mitsubishi
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Preface
This manual describes the hardware of the Mitsubishi
CMOS 8-bit microcomputers 7220 group.
After reading this manual, the user should have a
through knowledge of the functions and features of
7220 group, and should be able to fully utilize the
product. The manual starts with specifications and
ends with application examples.
For details of software, refer to the “SERIES 740
<SOFTWARE> USER’S MANUAL.”
For details of development support tools, refer to the
“DEVELOPMENT SUPPORT TOOLS FOR
MICROCOMPUTERS” data book.

i
BEFORE USING THIS MANUAL
This user’s manual consists of the following chapters. Refer to the chapter appropriate to your conditions,
such as hardware design or software development. The M37221M6-XXXSP/FP is used as a general example
in describing the functions of the 7220 group, unless other wise noted.
1. Organization
● CHAPTER 1 HARDWARE
This chapter describes features of the microcomputer, pin configuration, pin description, functional
block diagram.
●CHAPTER 2 FUNCTIONAL DESCRIPTION
This chapter describes operation of each peripheral function.
●CHAPTER 3 ELECTRIC CHARACTERISTICS
This chapter describes electric characteristics and standard characteristics.
●CHAPTER 4 M37220M3-XXXSP/FP
This chapter describes differences between the M37220M3-XXXSP/FP and M37221M6-XXXSP/FP.
●CHAPTER 5 APPLICATION
This chapter describes usage and application examples of peripheral functions, based mainly on
setting examples of related registers.
●CHAPTER 6 APPENDIX
This chapter includes precautions for systems development using the microcomputer, a list of control
registers, the mask ROM confirmation forms (mask ROM version) and mark specification forms which
are to be submitted when ordering.

ii
2. Register diagram
The figure of each register structure describes its functions, contents at reset, end attributes as follows:
Values immediately after reset release
Bit attributes
(Note 1)
(Note 2)
Bits
2: Bit attributes••••••The attributes of control register bits are classified into 3 types : read-only, write-only
and read and write. In the figure, these attributes are represented as follows :
: Bit in which nothing is assigned
Notes 1: Values immediately after reset release
0••••••“0” after reset release
1••••••“1” after reset release
?••••••Indeterminate after reset release
••••••Read enabled
••••••Read disabled
R••••••Read ••••••Write enabled
••••••Write disabled
••••••“0” can be set by software, but “1”
cannot be set.
W••••••Write
b7b6 b5b4b3 b2b1b0 CPU mode register (CPUM) (CM) [Address FB 16]
B After reset RW
CPU Mode Register
0, 1
2
3
to
5
0
1
Name Functions
Fix these bits to “0.”
Fix these bits to “1.”
1
Stack page selection
bit (CM2)
1
0: 0 page
1: 1 page
100
6, 7 Indeterminate
111
RW
RW
RW
RW
R
—W —
✽

7220 Group User’s Manual i
Table of contents
Table of contents
CHAPTER 1. OVERVIEW
1.1 Performance overview.......................................................................................................... 1-2
1.2 Pin configuration................................................................................................................... 1-5
1.3 Pin description ...................................................................................................................... 1-7
1.4 Functional block diagram ................................................................................................... 1-9
CHAPTER 2. FUNCTIONAL DESCRIPTION
2.1 Central processing unit....................................................................................................... 2-2
2.1.1 Accumulator (A) ............................................................................................................. 2-2
2.1.2 Index register X (X), index register Y (Y).................................................................. 2-2
2.1.3 Stack pointer (S)............................................................................................................ 2-3
2.1.4 Program counter (PC)................................................................................................... 2-6
2.1.5 Processor status register (PS)..................................................................................... 2-6
2.2 Access area............................................................................................................................ 2-8
2.2.1 Zero page (addresses 000016 to 00FF16)..................................................................2-10
2.2.2 Special page (addresses FF0016 to FFFF16) ............................................................2-10
2.3 Memory assignment ........................................................................................................... 2-11
2.3.1 Internal RAM ................................................................................................................ 2-16
2.3.2 I/O ports (addresses 00C016 to 00CD16) ................................................................... 2-16
2.3.3 DA registers (addresses 00CE16 and 00CF16).......................................................... 2-17
2.3.4 PWM registers (addresses 00D016 to 00D416 and 00F616) .....................................2-17
2.3.5 PWM output control registers (addresses 00D516 and 00D616) .............................2-17
2.3.6 Multi-master I2C-BUS related registers (addresses 00D716 to 00DB16).................2-17
2.3.7 Serial I/O related registers (addresses 00DC16 and 00DD16).................................2-17
2.3.8 CRT display related registers (addresses 00E016 to 00EC16) ................................2-17
2.3.9 A-D control register (addresses 00EE16 and 00EF16)..............................................2-18
2.3.10 Timer registers (addresses 00F016 to 00F316)........................................................2-18
2.3.11 Timer mode registers (address 00F416, 00F516) ....................................................2-19
2.3.12 CPU mode register (address 00FB16) .....................................................................2-19
2.3.13 Interrupt request registers (addresses 00FC16 and 00FD16).................................2-19
2.3.14 Interrupt control registers (addresses 00FE16 and 00FF16) ..................................2-19
2.3.15 2 page register (addresses 021716 to 021B16) (only M37221M8/MA-XXXSP) .. 2-19
2.3.16 CRT display RAM (addresses 060016 to 06B716) ..................................................2-19
2.3.17 ROM (addresses A00016 to FFFF16) ........................................................................ 2-19
2.3.18 CRT display ROM (addresses 1000016 to 11FFF16)..............................................2-19
2.4 Input/Output pins ................................................................................................................ 2-20
2.4.1 Programmable ports .................................................................................................... 2-20
2.4.2 Dedicated pins ............................................................................................................. 2-23
2.5 Interrupts .............................................................................................................................. 2-26
2.5.1 Interrupt sources.......................................................................................................... 2-27
2.5.2 Interrupt control............................................................................................................ 2-29
2.6 Timers.................................................................................................................................... 2-34
2.6.1 Timer functions ............................................................................................................ 2-35
2.6.2 Timers 3 and timer 4 when reset and when executing STP instruction..............2-39
i

Table of contents
7220 Group User’s Manual
ii
Table of contents
2.7 Serial I/O ............................................................................................................................... 2-40
2.7.1 Structure of serial I/O ................................................................................................. 2-40
2.7.2 Serial I/O register (address 00DD16) ......................................................................... 2-42
2.7.3 Clock source generating circuit ................................................................................. 2-42
2.7.4 Serial input/output common transmission/reception mode .....................................2-42
2.7.5 Serial I/O data receive method (when an internal clock is selected) ..................2-43
2.7.6 Serial I/O data transmit method (when an external clock is selected) ................2-44
2.7.7 Note when selecting a synchronous clock............................................................... 2-45
2.8 Multi-master I2C-BUS interface......................................................................................... 2-47
2.8.1 Construction of multi-master I2C-BUS interface.......................................................2-48
2.8.2 Multi-master I2C-BUS interface-related registers ..................................................... 2-49
2.8.3 START condition, STOP condition generation method...........................................2-58
2.9 A-D comparator ................................................................................................................... 2-61
2.10 PWM..................................................................................................................................... 2-63
2.10.1 8-bit PWM registers (addresses 00D016 to 00D416 and 00F616)
/DA registers (addresses 00CE16 and 00CF16) ....................................................2-64
2.10.2 14-bit PWM (DA output) ........................................................................................... 2-65
2.10.3 8-bit PWM (PWM0 to PWM5: address 00D016 to 00D416 and 00F616 ) .............2-67
2.10.4 14-bit PWM output control........................................................................................ 2-69
2.10.5 8-bit PWM output control.......................................................................................... 2-70
2.11 CRT display function ....................................................................................................... 2-71
2.11.1 Display position.......................................................................................................... 2-74
2.11.2 Character size............................................................................................................ 2-77
2.11.3 Memory for display.................................................................................................... 2-78
2.11.4 Color registers............................................................................................................ 2-82
2.11.5 Multiline display ......................................................................................................... 2-84
2.11.6 Character border function......................................................................................... 2-85
2.11.7 CRT output pin control ............................................................................................. 2-86
2.11.8 Raster coloring function............................................................................................ 2-87
2.11.9 Clock for display........................................................................................................ 2-88
2.12 ROM correction function................................................................................................. 2-89
2.13 Software runaway detect function ................................................................................ 2-90
2.14 Low-power dissipation mode ......................................................................................... 2-91
2.14.1 Stop mode .................................................................................................................. 2-91
2.14.2 Wait mode .................................................................................................................. 2-93
2.14.3 Interrupts in low-power dissipation mode............................................................... 2-93
2.15 Reset.................................................................................................................................... 2-95
2.15.1 Reset operation.......................................................................................................... 2-95
2.15.2 Internal state immediately after reset ..................................................................... 2-96
2.15.3 Notes for poweron reset........................................................................................... 2-99
2.16 Clock generating circuit................................................................................................ 2-100
2.17 Oscillation circuit............................................................................................................ 2-101
CHAPTER 3. ELECTRICAL CHARACTERISTICS
3.1 Electrical characteristics..................................................................................................... 3-2
3.2 Standard characteristics...................................................................................................... 3-6

7220 Group User’s Manual iii
Table of contents
CHAPTER 4. M37220M3-XXXSP/FP
4.1 Performance overview.......................................................................................................... 4-2
4.2 Pin configuration................................................................................................................... 4-4
4.3 Pin description ...................................................................................................................... 4-6
4.4 Functional block diagram ................................................................................................... 4-8
4.5 Functional description ......................................................................................................... 4-9
4.5.1 Access area.................................................................................................................. 4-10
4.5.2 Memory assignment..................................................................................................... 4-11
4.5.3 Input/Output pins ......................................................................................................... 4-14
4.5.4 Interrupts....................................................................................................................... 4-15
4.5.5 D-A converter ............................................................................................................... 4-17
4.5.6 CRT Display function .................................................................................................. 4-19
4.5.7 Internal state immediately after reset ....................................................................... 4-26
4.6 Electrical characteristics................................................................................................... 4-28
4.7 Standard characteristics.................................................................................................... 4-32
CHAPTER 5. APPLICATION
5.1 Example of multi-line display............................................................................................. 5-2
5.1.1 Specifications ................................................................................................................. 5-2
5.1.2 Connection example ...................................................................................................... 5-2
5.1.3 General flowchart........................................................................................................... 5-3
5.1.4 Set of display character data....................................................................................... 5-6
5.1.5 Line counter.................................................................................................................... 5-7
5.1.6 Processing time ............................................................................................................. 5-8
5.1.7 Set of multiple interrupts .............................................................................................. 5-9
5.2 Notes on programming for OSD (M37220M3-XXXSP/FP) ...........................................5-13
5.2.1 Setting of color registers ............................................................................................ 5-13
5.2.2 Setting of border selection register........................................................................... 5-14
5.2.3 Number of display characters .................................................................................... 5-14
5.3 Usage example of ROM correction function (M37221M8/MA-XXXSP) .....................5-15
5.3.1 Connection example .................................................................................................... 5-15
5.3.2 Correction example...................................................................................................... 5-15
5.3.3 E2PROM map ............................................................................................................... 5-17
5.3.4 General flowchart......................................................................................................... 5-19
5.3.5 Notes on use................................................................................................................ 5-20
5.4 Example of I2C-BUS interface control (M37221Mx-XXXSP/FP)..................................5-21
5.4.1 Specifications ............................................................................................................... 5-21
5.4.2 Connection example .................................................................................................... 5-21
5.4.3 E2PROM functions ....................................................................................................... 5-22
5.4.4 General flowchart......................................................................................................... 5-23
5.5 Example of I2C-BUS control by software (M37220M3-XXXSP/FP)............................5-26
5.5.1 Specifications ............................................................................................................... 5-26
5.5.2 Connection example .................................................................................................... 5-26
5.5.3 Single-chip color TV signal processor function .......................................................5-27
5.5.4 General flowchart......................................................................................................... 5-28
5.5.5 Data setting according to key processing ................................................................5-34
5.5.6 Flowchart of data setting according to key processing..........................................5-36
5.5.7 Register map................................................................................................................ 5-39
5.6 Application circuit example.............................................................................................. 5-45
5.6.1 Application circuit example 1 ..................................................................................... 5-45
5.6.2 Application circuit example 2 ..................................................................................... 5-46

Table of contents
7220 Group User’s Manual
iv
CHAPTER 6. APPENDIX
6.1 Package outline..................................................................................................................... 6-2
6.2 Termination of unused pins ............................................................................................... 6-3
6.3 Notes on use ......................................................................................................................... 6-4
6.3.1 Notes on processor status register ............................................................................. 6-4
6.3.2 Notes on decimal operation ......................................................................................... 6-5
6.3.3 Notes on Interrupts........................................................................................................ 6-5
6.3.4 Notes on serial I/O........................................................................................................ 6-6
6.3.5 Notes on timer ............................................................................................................... 6-7
6.3.6 Notes on A-D comparator............................................................................................. 6-8
6.3.7 Note on RESET pin....................................................................................................... 6-8
6.3.8 Notes on input and output pins................................................................................... 6-9
6.3.9 Note on JMP instruction ............................................................................................... 6-9
6.3.10 Note on multi-master I2C-BUS interface................................................................. 6-10
6.3.11 Termination of unused pins...................................................................................... 6-10
6.4 Counter measures against noise .................................................................................... 6-11
6.4.1 Shortest wiring length ................................................................................................. 6-11
6.4.2 connection of a bypass capacitor across VSS line and VCC line............................6-13
6.4.3 Wiring to analog input pins ........................................................................................ 6-13
6.4.4 Oscillator concerns ...................................................................................................... 6-14
6.4.5 Setup for I/O ports ...................................................................................................... 6-15
6.4.6 Providing of watchdog timer function by software ..................................................6-16
6.5 Memory assignment ........................................................................................................... 6-17
6.6 SFR assignment .................................................................................................................. 6-20
6.7 Control registers ................................................................................................................. 6-30
6.8 Ports ...................................................................................................................................... 6-51
6.9 Machine instruction table.................................................................................................. 6-53
6.10 Instruction code table...................................................................................................... 6-63
6.11 Mask ROM ordering method........................................................................................... 6-64
6.12 Mark specification form................................................................................................... 6-80