Z8F160x Zilog, Z8F160x Datasheet - Page 170
![no-image](/images/manufacturer_photos/0/7/729/zilog_sml.jpg)
Z8F160x
Manufacturer Part Number
Z8F160x
Description
Z8 Encore / Microcontrollers with Flash Memory and 10 Bit A/D Converter
Manufacturer
Zilog
Datasheet
1.Z8F160X.pdf
(246 pages)
- Current page: 170 of 246
- Download datasheet (2Mb)
Operation
PS017610-0404
OCD Interface
Caution:
The On-Chip Debugger uses the DBG pin for communication with an external host. This
one-pin interface is a bi-directional open-drain interface that transmits and receives data.
Data transmission is half-duplex, in that transmit and receive cannot occur simultaneously.
The serial data on the DBG pin is sent using the standard asynchronous data format
defined in RS-232. This pin can interface the Z8F640x family device to the serial port of a
host PC using minimal external hardware.Two different methods for connecting the DBG
pin to an RS-232 interface are depicted in Figures 87 and 88.
Figure 87. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface (1)
RS-232 TX
RS-232 RX
For operation of the On-Chip Debugger, all power pins (VDD and AVDD)
must be supplied with power, and all ground pins (VSS and AVSS) must
be properly grounded.
The DBG pin is open-drain and must always be connected to V
an external pull-up resistor to ensure proper operation.
Transceiver
RS-232
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
Diode
VDD
10K Ohm
DBG Pin
DD
On-Chip Debugger
through
Z8 Encore!
®
152
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