ST7FLITE29 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST7FLITE29

8-BIT MICROCONTROLLER WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI

STMicroelectronics 

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ST7LITE2

WATCHDOG TIMER (Cont’d)

11.1.5 Interrupts

None.

11.1.6 Register Description

CONTROL REGISTER (CR)

Read / Write

Reset Value: 0111 1111 (7Fh)

7

0

WDGA T6 T5 T4 T3 T2 T1 T0

When WDGA = 1, the watchdog can generate a

reset.

0: Watchdog disabled

1: Watchdog enabled

Note: This bit is not used if the hardware watch-

dog option is enabled by option byte.

Bits 6:0 = T[6:0] 7-bit timer (MSB to LSB).

These bits contain the decremented value. A reset

is produced when it rolls over from 40h to 3Fh (T6

becomes cleared).

Bit 7 = WDGA Activation bit.

This bit is set by software and only cleared by

hardware after a reset.

Table 13. Watchdog Timer Register Map and Reset Values

Address

(Hex.)

Register

Label

7

6

5

4

3

2

1

0

002Eh

WDGCR

WDGA

Reset Value

0

T6

1

T5

1

T4

1

T3

1

T2

1

T1

1

T0

1

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