ST7LITE49M STMicroelectronics, ST7LITE49M Datasheet - Page 35

• 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
Figure 12. Clock switching
Figure 13. Clock management block diagram
CLKIN
CLKIN
/OSC1
OSC2
f
OSC
CK2
1-16 MHz
or 32kHz
OSC
CR9
Prescaler
CK1
CLKIN
CLKIN
CLKSEL[1:0]
CR8
/32 DIVIDER
Option bits
8 MHz (f
CK0
CR7
RC
Tunable
RC
CR6
500 kHz
Oscillator
)
Internal RC
AWU RC
8 MHz
4 MHz
2 MHz
1 MHz
DIVIDER
CR1
CR5
/2
OSC
Doc ID 13562 Rev 3
CR0
RC OSC
LITE TIMER 2 COUNTER
CR4
f
f
OSC
OSC
Poll AWU_FLAG until set
MCO
DIVIDER
Poll RC_FLAG until set
Set RC/AWU
Reset RC/AWU
CLKIN/2
/32
/2
CR3
8-BIT
SMS
1
0
Clock controller
CR2
MCCSR
AWU RC OSC
RCCR
Supply, reset and clock management
(1ms timebase @ 8 MHz f
Internal RC
AWU RC
f
LTIMER
f
CPU
CLKIN/2
OSC/2
f
CPU
RC/AWU
CLKSEL[1:0]
TO CPU AND
PERIPHERALS
AT TIMER 2
Option bits
12-BIT
CKCNTCSR
f
CPU
OSC
f
OSC
)
MCO
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