Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 43

• 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
Internal RESET
System Clock
Note: Not to Scale
WDT Clock
V
DD
signal
= 3.3V
Watchdog Timer Reset
External Reset Input
V
V
POR
VBO
The Voltage Brown-Out circuit can be either enabled or disabled during STOP Mode.
Operations during STOP Mode is set by the VBO_AO Flash option bit. See the
Option Bits
If the device is operating in NORMAL or STOP Mode, the Watchdog Timer can initiate a
system reset at time-out if the WDT_RES Flash option bit is programmed to 1; this state is
the unprogrammed state of the WDT_RES Flash option bit. If the bit is programmed to 0,
it configures the Watchdog Timer to cause an interrupt – not a system reset – at time-out.
The WDT status bit in the Reset Status (RSTSTAT) Register is set to 1 to signify that the
reset was initiated by the Watchdog Timer.
The RESET pin has a Schmitt-triggered input and an internal pull-up resistor. After the
RESET pin is asserted for a minimum of four system clock cycles, the device progresses
through the system reset sequence. Because of the possible asynchronicity of the system
Execution
Program
chapter on page 124 for information about configuring VBO_AO.
Figure 7. Voltage Brown-Out Reset Operation
Brown-Out
Voltage
counter delay
POR
Z8 Encore!
Product Specification
Execution
Program
®
F0830 Series
Reset Sources
V
DD
Flash
= 3.3V
25