Z8F012ASB020EG Zilog, Z8F012ASB020EG Datasheet - Page 185

• Manufacturer Part Number: Z8F012ASB020EG
• Description: IC ENCORE XP MCU FLASH 1K 8SOIC
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F012ASB020EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 6
• Program Memory Size: 1KB (1K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 16 x 8
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 8-SOIC (3.9mm Width)
• Processor Series: Z8F012Ax
• Core: eZ8
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 6
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: Z8F04A08100KITG, Z8F04A28100KITG, ZENETSC0100ZACG, ZENETSC0100ZACG, ZUSBOPTSC01ZACG, ZUSBSC00100ZAC, ZUSBSC00100ZACG
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 4 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4038; Z8F012ASB020EG

Operation
PS022825-0908
Figure 24. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface (1)
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 creates an interface from the Z8 Encore! XP
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
and
Figure
cations (for more details on the pull-up current, see
page 221). For OCD operation at higher data rates or in noisy systems, an external pull-up
resistor is recommended.
RS-232 TX
RS-232 RX
Figure
25. The DBG pin has a internal pull-up resistor which is sufficient for some appli-
For operation of the on-chip debugger, all power pins (V
must be supplied with power, and all ground pins (V
properly grounded. The DBG pin is open-drain and may require an exter-
nal pull-up resistor to ensure proper operation.
25. The recommended method is the buffered implementation displayed in
Transceiver
RS-232
Schottky
Diode
VDD
Electrical Characteristics
Z8 Encore! XP
10 KOhm
SS
DBG Pin
and AV
Product Specification
DD
and AV
SS
®
®
) must be
On-Chip Debugger
F082A Series
F082A Series
Figure 24
on
DD
)
174