ST7LITE49M STMicroelectronics, ST7LITE49M Datasheet - Page 77
ST7LITE49M
Manufacturer Part Number
ST7LITE49M
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST7LITE49M.pdf
(187 pages)
Specifications of ST7LITE49M
4 Kbytes Single Voltage Extended Flash (xflash) Program Memory With Read-out Protection In-circuit Programming And In-application Programming (icp And Iap) Endurance
10k write/erase cycles guaranteed Data retention
128 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention
20 years at 55 °C.
Clock Sources
Internal trimmable 8 MHz RC oscillator, auto-wakeup internal low power - low frequency oscillator, crystal/ceramic resonator or external clock
Five Power Saving Modes
Halt, Active-halt, Auto-wakeup from Halt, Wait and Slow
A/d Converter
10 input channels
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ST7LITE49M
11.1.6
Note:
Register description
Control register (WDGCR)
Reset value: 0111 1111 (7Fh)
Bit 7 = WDGA Activation bit
This bit is not used if the hardware watchdog option is enabled by option byte.
Bits 6:0 = T[6:0] 7-bit timer (MSB to LSB)
Table 34.
Address
(Hex.)
0033h
WDGA
This bit is set by software and only cleared by hardware after a reset. When WDGA = 1,
the watchdog can generate a reset.
0: Watchdog disabled
1: Watchdog enabled
These bits contain the decremented value. A reset is produced when it rolls over from
40h to 3Fh (T6 becomes cleared).
7
Register
WDGCR
Watchdog timer register mapping and reset values
Reset
label
value
T6
WDGA
7
0
T5
Doc ID 13562 Rev 3
T6
6
1
Read/Write
T4
T5
5
1
T4
4
1
T3
T3
3
1
T2
T2
2
1
On-chip peripherals
T1
T1
1
1
T0
77/188
0
T0
0
1
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