ST7LITE49M STMicroelectronics, ST7LITE49M Datasheet - Page 93

• Manufacturer Part Number: ST7LITE49M
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

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

ST7LITE49M
Bits 4:3 = CK[1:0] Counter clock selection bits
Table 37.
Bit 2 = OVF1 Overflow flag
Bit 1 = OVFIE1 Overflow interrupt enable bit
Bit 0 = CMPIE Compare interrupt enable bit
Counter register 1 high (CNTR1H)
Reset value: 0000 0000 (00h)
Counter register 1 low (CNTR1L)
Reset value: 0000 0000 (00h)
Bits 15:12 = Reserved
CNTR1_7
These bits are set and cleared by software and cleared by hardware after a reset. they
select the clock frequency of the counter.
This bit is set by hardware and cleared by software by reading the ATCSR register. It
indicates the transition of the counter1 CNTR1 from FFFh to ATR1 value.
0: No counter overflow occurred
1: Counter overflow occurred
This bit is read/write by software and cleared by hardware after a reset.
0: Overflow Interrupt Disabled.
1: Overflow Interrupt Enabled.
This bit is read/write by software and cleared by hardware after a reset. it can be used
to mask the interrupt generated when any of the cmpfx bit is set.
0: Output compare interrupt disabled.
1: Output compare interrupt enabled.
15
7
0
CNTR1_6
Counter clock selection
0
f
LTIMER
Counter clock selection
CNTR1_5
selection forbidden
(1 ms timebase @ 8 MHz)
0
Doc ID 13562 Rev 3
OFF
f
CPU
CNTR1_4
0
Read only
Read only
CNTR1_3
CNTR1_
11
CNTR1_2
CNTR1_
10
CNTR1_9
CNTR1_1
On-chip peripherals
CK1
0
1
0
1
CNTR1_8
CNTR1_0
CK0
0
1
1
0
8
0
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