Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 114

• 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
Bit
Field
RESET
R/W
Address
Note: *A read returns the current WDT count value; a write sets the appropriate reload value.
Bit
[7:0]
WDTU
Bit
Field
RESET
R/W
Address
Note: *A read returns the current WDT count value; a write sets the appropriate reload value.
Bit
[7:0]
WDTH
Caution:
Watchdog Timer Reload Upper, High and Low Byte Registers
Description
WDT Reload Upper Byte
Most significant byte (MSB), Bits[23:16], of the 24-bit WDT reload value.
Description
WDT Reload High Byte
Middle byte, bits[15:8] of the 24-bit WDT reload value.
R/W*
R/W*
7
0
7
0
The Watchdog Timer Reload Upper, High and Low Byte (WDTU, WDTH, WDTL) regis-
ters, shown in Tables 60 through 62, form the 24-bit reload value that is loaded into the
Watchdog Timer when a WDT instruction executes. This 24-bit value ranges across bits
[23:0] to encompass the three bytes {WDTU[7:0], WDTH[7:0], WDTL[7:0]}. Writing to
these registers sets the appropriate reload value; reading from these registers returns the
current Watchdog Timer count value.
The 24-bit WDT reload value must not be set to a value less than
Table 60. Watchdog Timer Reload Upper Byte Register (WDTU)
Table 61. Watchdog Timer Reload High Byte Register (WDTH)
R/W*
R/W*
6
0
6
0
R/W*
R/W*
5
0
5
0
R/W*
R/W*
4
0
4
0
WDTU
WDTH
FF1H
FF2H
Watchdog Timer Control Register Definitions
R/W*
R/W*
3
0
3
0
R/W*
R/W*
Z8 Encore!
2
0
2
1
Product Specification
000004H
R/W*
R/W*
1
0
1
0
®
F0830 Series
.
R/W*
R/W*
0
0
0
0
96