UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 48

• Manufacturer Part Number: UPSD3234AV-24U1T
• Description: Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
• Manufacturer: STMicroelectronics

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uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
Figure 21. RESET Pulse Width
Table 34. Watchdog Timer Clear Register (WDRST: 0A6H)
Table 35. Description of the WDRST Bits
Note: The Watchdog Timer (WDT) is enabled at power-up or reset and must be served or disabled.
48/170
Reserved
6 to 0
Bit
7
7
WDRST6 to
WDRST6
WDRST0
Symbol
—
6
Reserved
To reset watchdog timer, write any value beteen 00h and 7Eh to this register.
This value is loaded to the 7 most significant bits of the 22-bit counter.
For example: MOV WDRST,#1EH
WDRST5
5
(about 6.291 seconds at 8Mhz)
(1.258 second at 40Mhz)
Reset period
WDRST4
Reset pulse width (about 10ms at 40Mhz, about 50ms at 8Mhz)
4
WDRST3
3
Function
WDRST2
2
WDRST1
1
AI06823
WDRST0
0