Z8F041APH020SG2156 ZiLOG, Z8F041APH020SG2156 Datasheet - Page 198

• Manufacturer Part Number: Z8F041APH020SG2156
• Description: 8-bit Microcontrollers - MCU 4K FLASH 1K RAM 128B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F041APH020SG2156

• Rohs: yes
• Core: eZ8
• Processor Series: Z8F041xx
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 4 KB
• Data Ram Size: 1 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 2.7 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: PDIP-20
• Mounting Style: Through Hole
• A/d Bit Size: 10 bit
• A/d Channels Available: 8
• Interface Type: UART
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 17
• Number Of Timers: 2
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

PS022827-1212
Operation
Figure 24. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface; #1 of 2
Caution:
OCD Interface
This section describes the interface and modes of operation of the On-Chip Debugger.
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, 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 creates an interface from the Z8 Encore! XP F082A Series
products 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 displayed in Figure 24
and Figure 25. The recommended method is the buffered implementation displayed in
Figure 25. The DBG pin has a internal pull-up resistor which is sufficient for some appli-
cations (for more details about the pull-up current, see the
ter on page 226). For OCD operation at higher data rates or in noisy systems, an external
pull-up resistor is recommended.
For operation of the on-chip debugger, all power pins (V
with power and all ground pins (V
pin is open-drain and may require an external pull-up resistor to ensure proper operation.
RS-232 TX
RS-232 RX
Transceiver
P R E L I M I N A R Y
RS-232
SS
and AV
Schottky
Diode
SS
) must be properly grounded. The DBG
VDD
Z8 Encore! XP
10 KOhm
DD
Electrical Characteristics
and AV
DBG Pin
Product Specification
DD
) must be supplied
®
F082A Series
Operation
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