ST7LITE49K2 STMicroelectronics, ST7LITE49K2 Datasheet - Page 182

• Manufacturer Part Number: ST7LITE49K2
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST7LITE49K2

• 8 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
• 256 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

On-chip peripherals
Note:
Note:
182/245
This bit should be set to enable interrupt only after the comparator has been switched ON,
i.e. when CMPON is set.
Once CMPON bit is set, it is recommended to wait the specified stabilization time before
setting CMPIE bit in order to avoid a spurious interrupt (see analog comparator
characteristics in
Bit 2 : CMP Comparator output
This bit is set or reset by software and cleared by hardware reset. It stores the value of
comparator output.
Bit 1 = COUT Comparator output enable on Port
This bit is set or cleared by software. When this bit is set, the comparator output is available
on PA7 port.
Bit 0 : CMPON Comparator ON/OFF
This bit is set or cleared by software and reset by hardware reset. This bit is used to switch
ON/OFF the comparator, internal voltage reference and current bias which provides 4µA
current to both.
For the comparator interrupt generation, it takes 250 ns delay from comparator output
change to rising or falling edge of interrupt generated.
Table 60.
Address
(Hex.)
0052h
0053h
0054h
0 : Comparator interrupt flag cleared
1 : Comparator interrupt flag set and can generate interrupt if CMPIE is set.
0: Comparator, internal voltage reference, Bias OFF (in power-down state).
1: Comparator, internal voltage reference, Bias ON
Reset value
Reset value
Reset value
CMPBCR
VREFCR
CMPACR
Register
Analog comparator register map and reset values
label
Section 13: Electrical characteristics on page
VCEXT
CHYST
CHYST
7
0
1
1
VCBGR
6
0
0
0
-
-
CINV
CINV
VR3
5
0
0
0
CMPIF
CMPIF
VR2
4
0
0
0
CMPIE
CMPIE
VR1
3
0
0
0
192).
CMP
CMP
VR0
2
0
0
0
VCEXTB
COUT
COUT
1
0
0
0
ST7LITE49K2
CMPON
CMPON
0
0
0
0
-