ST7LITE49K2 STMicroelectronics, ST7LITE49K2 Datasheet - Page 119

• 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

ST7LITE49K2
Note:
A minimum of four falling edges of the CPU clock must occur between two consecutive
active edges of the external clock; thus the external clock frequency must be less than a
quarter of the CPU clock frequency.
Figure 57. Counter timing diagram, internal clock divided by 2
Figure 58. Counter timing diagram, internal clock divided by 4
Figure 59. Counter timing diagram, internal clock divided by 8
The device is in reset state when the internal reset signal is high, when it is low the device is
running.
Timer overflow flag (TOF)
Timer overflow flag (TOF)
Timer overflow flag (TOF)
Counter register
Counter register
Internal reset
Counter register
Timer clock
Internal reset
CPU clock
Internal reset
Timer clock
CPU clock
CPU clock
Timer clock
FFFC
FFFC
FFFD FFFE
FFFD
FFFF
FFFD
0000
0000
0001
0002
On-chip peripherals
0001
0003
0000
119/245