Z8F0431SJ020SG Zilog, Z8F0431SJ020SG Datasheet - Page 142

• Manufacturer Part Number: Z8F0431SJ020SG
• Description: IC ENCORE XP MCU FLASH 4K 28SOIC
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F0431SJ020SG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 25
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-SOIC (7.5mm Width)
• For Use With: 770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Other names: 269-4627-5

Operation
PS025111-1207
OCD Interface
Caution:
Figure 21. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface (1)
The On-Chip Debugger uses the DBG pin for communication with an external host. This
one-pin interface is a bidirectional open-drain interface that transmits and receives data.
Data transmission is half-duplex, which means transmission and data retrieval cannot
occur simultaneously. The serial data on the DBG pin is sent using the standard
asynchronous data format defined in RS-232.This pin creates an interface between the Z8
Encore!
hardware. Two different methods for connecting the DBG pin to an RS-232 interface are
displayed in
implementation depicted in
through an external pull-up resistor.
RS-232 TX
RS-232 RX
®
For operation of the On-Chip Debugger, all power pins (V
must be supplied with power, and all ground pins (V
properly grounded.
The
an external pull-up resistor to insure proper operation.
F0830 Series products and the serial port of a host PC using minimal external
DBG
Figure 21
pin is open-drain and must always be connected to V
Transceiver
and
RS-232
Figure
Figure
22. The recommended method is the buffered
22. The DBG pin must always be connected to V
Schottky
Diode
VDD
10KOhm
Z8 Encore!
SS
DBG Pin
and AV
Product Specification
DD
DD
SS
and AV
®
) must be
On-Chip Debugger
through
F0830 Series
DD
)
DD
132