Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 159

• Manufacturer Part Number: Z8F011ASH020EG2156
• Description: 8-bit Microcontrollers - MCU 1K FLASH 256B RAM 16B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F011ASH020EG2156

• Rohs: yes
• Core: eZ8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 1 KB
• Data Ram Size: 256 B
• On-chip Adc: No
• Package / Case: SOIC-20
• Mounting Style: SMD/SMT
• 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

PS025113-1212
Figure 22. Interfacing the On-Chip Debugger’s DBG Pin with an RS-232 Interface, #2 of 2
DEBUG Mode
The operating characteristics of the devices in DEBUG Mode are:
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Entering DEBUG Mode
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Exiting DEBUG Mode
The device exits DEBUG Mode following any of these operations:
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RS-232 TX
RS-232 RX
The eZ8 CPU fetch unit stops, idling the eZ8 CPU, unless directed by the OCD to ex-
ecute specific instructions
The system clock operates, unless the device is in STOP Mode
All enabled on-chip peripherals operate, unless the device is in STOP Mode
Automatically exits HALT Mode
Constantly refreshes the Watchdog Timer, if enabled
The device enters DEBUG Mode after the eZ8 CPU executes a Breakpoint (BRK) in-
struction
If the DBG pin is held low during the most recent clock cycle of system reset, the de-
vice enters DEBUG Mode on exiting system reset
Clearing the DBGMODE bit in the OCD Control Register to 0
Power-On Reset
Voltage Brown-Out reset
Transceiver
RS-232
Open-Drain
Buffer
VDD
10KΩ
Z8 Encore!
DBG Pin
Product Specification
®
F0830 Series
Operation
141