ZiLOG Z8 Encore! XP F1680 28-Pin Series User manual

Copyright ©2008 by Zilog®, Inc. All rights reserved.
www.zilog.com
Z8F16800128ZCOG
Z8 Encore! XP®F1680 28-Pin
Series Development Kit
User Manual
UM020305-0508

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Safeguards
ii
Safeguards
The following precaution must be observed when working with the
devices described in this document.
Always use a grounding strap to prevent damage resulting from
electrostatic discharge (ESD).
Caution:

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Revision History
iii
Revision History
Each instance in Revision History reflects a change to this document from
its previous revision. For more details, refer to the corresponding pages
and appropriate links in the table below.
Date Revision Level Description Page No
May
2008 5 Added Z8F1680SJ020 to the Introduction section. 1
March
2008 4 Modified Schematics Table 2 to incorporate changes to R15 from
220 Ωto 0 Ω. Added Note 3 to the
Schematics.
11
February
2008 3 Updated document with new Zilog logo and text. Implemented Style Guide. All
June
2007 2 Removed IrDA. 3, 7, 8, 9, 12
November
2006 1 Original issue. All

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Table of Contents
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Table of Contents
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
F1680 28-Pin Series Development Board . . . . . . . . . . . . . . . . . . . . . 6
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Power and Communication Interfaces . . . . . . . . . . . . . . . . . . . . . . . 9
External Interface Headers JP1 and JP2 . . . . . . . . . . . . . . . . . . . . . 9
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Customer Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Introduction
1
Introduction
Zilog’s Z8 Encore! XP®F1680 Series are Flash microcontrollers based
on Zilog’s eZ8TM CPU, the 8-bit CPU core. Optimized for low-power
applications, the Z8 Encore! XP F1680 Series support 1.8 V to 3.6 V
operation with extremely low active, halt, and stop mode currents and an
assortment of speed and low power options.
Z8F1680SJ020 is the silicon used in the board. For more details, refer to
Z8 Encore! XP®F1680 Series Product Specification (PS0250) available
for download at www.zilog.com.
The features available to balance power and performance needs of
applications include:
• Wide operating voltage range: 1.8 V to 3.6 V.
• Active, Halt, and Stop operational modes with the ability to enable or
disable peripherals for power savings.
• Oscillator control that determines clock source, operating speed, and
fail safe operation in addition to fast wakeup.
• A user-controlled Program RAM area to store interrupt service
routines of high-frequency interrupts. The Program RAM mechanism
ensures low average current and quick response for high frequency
interrupts.
The Z8 Encore! XP F1680 Series support up to 24 KB Flash program
memory and 2 KB register data RAM. It also supports up to 256 B Non-
Volatile Data Storage (NVDS) besides the 1 KB of Program RAM.
The Z8 Encore! XP F1680 Series feature up to eight single-ended
channels of 10-bit high speed analog-to-digital conversion with a sample
and hold circuit. It also features one low-power operational amplifier for
current sampling and two comparators. An on-chip temperature sensor

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Introduction
2
allows die temperature measurement over a range of –40 ºC to +105 °C.
These devices also include an on-chip low voltage detect block with
user-selectable threshold.
Two full-duplex, 9-bit UARTs provide serial, asynchronous communica-
tion and support the local interconnect network (LIN) serial communica-
tions protocol. The LIN bus is a cost-efficient, single master, multiple
slave organization that supports speed up to 20 kbps. The Z8 Encore! XP
F1680 Series also support an Enhanced Serial Peripheral Interface (ESPI)
controller that provides buffered full-duplex, synchronous, character-
oriented channel, and a I2C Master/Slave port to allow easy incorporation
into any system.
The Z8 Encore! XP F1680 Series feature three 16-bit timers with Pulse-
Width Modulation (PWM), Capture, and Compare capabilities. The
timers can operate in Stop mode using a low-power 32 kHz peripheral
clock. The noise filter prevents false MCU wakeup, which eventually
results in long-lasting battery. The Z8 Encore! XP F1680 Series also
feature a multichannel timer that supports four Capture/Compare modules
on one timer.
The Z8 Encore! XP F1680 Series feature a user-selectable system clock
and an external 32 kHz, watch-crystal-based, low-power peripheral clock.
System clock sources include a high accuracy Internal Precision Oscilla-
tor (IPO) requiring no external components and an on-chip oscillator
using external crystal, resonator, or low-cost RC circuit. The on-chip IPO
is 2% accurate over standard temperature and voltage, and its output
frequency is selectable in the 11 MHz to 43 kHz range. A low-power
external 32 kHz, watch-crystal-based peripheral clock is available for the
operation of timers in STOP mode as well as for the implementation of a
real-time clock.
The Z8 Encore! XP F1680 Series support a single-pin debugger and
programming interface that simplifies code development and allows easy
in-circuit programming.

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Introduction
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Features
Key features of Z8 Encore! XP F1680 Series Flash microcontrollers
include:
• 20 MHz eZ8TM CPU core
• 8 KB, 16 KB, or 24 KB Flash memory with in-circuit programming
capability
• 1 KB or 2 KB register data RAM
• Up to 1 KB Program RAM for program code shadowing and data
storage (optional)
• Up to 256 B Non-Volatile Data Storage (NVDS)
• Optional fast 8-channel, 10-bit Analog-to-Digital Converter (ADC)
• On-chip temperature sensor
• Up to two on-chip analog comparators (20-pin and 28-pin packages
have only one)
• On-chip Low-Power Operational Amplifier (LPO)
• Two full-duplex, 9-bit, Universal Asynchronous Receiver/Transmitter
(UART) ports with support of Local Interconnect Network (LIN) pro-
tocol (20-pin and 28-pin packages have only one)
• Enhanced Serial Peripheral Interface (SPI) controller (28-pin, 40-pin,
and 44-pin packages only)
• I2C Master/Slave
• Three enhanced 16-bit timers with Capture, Compare, and PWM
capability
• Optional multichannel timer that supports four capture/compare
modules on one timer (44-pin packages only)
• Watchdog Timer (WDT) with dedicated internal RC oscillator

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Introduction
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• 17 to 39 General-Purpose Input/Output (GPIO) pins depending on
package
• Up to 8 direct LED drives
• Up to 20 vectored interrupts
• On-Chip Debugger (OCD)
• Power-On Reset (POR)
• Built-in Low-Voltage Detection (LVD) and Voltage Brownout (VBO)
protection
• 32 kHz secondary oscillator for timers
• Internal Precision Oscillator (IPO) with output frequency in the range
of 43.2 kHz to 11.059 MHz
• Crystal oscillator with three power settings and external RC network
option
• Wide operation voltage: 1.8 V to 3.6 V
• Up to thirty-nine 5 V-tolerant inputs (digital mode only)
• Ultra low power consumption:
– Active mode:
Typical < 0.2 mA/MHz @1.8 V (Flash/PRAM On)
Typical < 0.1 mA/MHz @1.8 V (Flash Off/PRAM On)
– Halt mode:
Typical < 70 µA/MHz @1.8 V
–Stopmode:
Typical < 0.01 µA @1.8 V (all peripherals disabled)
Typical < 1.0 µA @1.8 V (WDT running)
• 20-pin, 28-pin, 40-pin, and 44-pin packages
• 0 ºC to +70 ºC (standard), –40 ºC to +105 ºC (extended) operating
temperature ranges

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 Introduction
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For more information on Z8 Encore! XP F1680 Series, refer to
Z8 Encore! XP®F1680 Series Product Specification (PS0250), available
for download at www.zilog.com.
CPU
Zilog’s eZ8TM CPU, latest 8-bit CPU meets the continuing demand for
faster and more code-efficient microcontrollers. It executes a superset of
the original Z8®instruction set. The eZ8 CPU features include:
• Direct register-to-register architecture allows each register to function
as an accumulator, improving execution time and decreasing the
required Program Memory
• Software stack allows greater depth in sub-routine calls and interrupts
more than hardware stacks
• Compatible with existing Z8 code
• Expanded internal Register File allows access up to 4 KB
• New instructions improve execution efficiency for code developed
using higher-level programming languages including C
• Pipelined instruction fetch and execution
• New instructions for improved performance including BIT, BSWAP,
BTJ, CPC, LDC, LDCI, LEA, MULT, and SRL
• New instructions support 12-bit linear addressing of the register file
• Up to 10 MIPS operation
• C-Compiler friendly
• Two to nine clock cycles per instruction
For more details on eZ8 CPU, refer to eZ8TM CPU User Manual
(UM0128) available for download at www.zilog.com.

Z8 Encore! XP®F1680 28-Pin Series Development Kit
User Manual
UM020305-0508 F1680 28-Pin Series Development Board
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F1680 28-Pin Series Development
Board
The Z8 Encore! XP F1680 28-Pin Series development board is a develop-
ment and prototyping board for the Z8 Encore! XP F1680 Series MCU.
The board provides customers with a tool to evaluate features of the
Z8 Encore! XP F1680 Series MCU and to start developing an application
before building the hardware.
Figure 1. Z8 Encore! XP F1680 28-Pin Series Development Board