ST72345C4 STMicroelectronics, ST72345C4 Datasheet - Page 34

• Manufacturer Part Number: ST72345C4
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72345C4

• Up To 16 Kbytes Program Memory: single voltage extended Flash (XFlash) with readout and write protection, in-circuit and inapplication programming (ICP and IAP). 10K write/erase cycles guaranteed, data retention
• 256 Bytes Data Eeprom With Readout Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55 °C.
• Clock Sources: crystal/ceramic resonator oscillators, high-accuracy internal RC oscillator or external clock
• 5 Power-saving Modes: Slow, Wait, Halt, Auto-wakeup from Halt and Active-halt
• 16-bit Timer A With: 1 input capture, 1 output compares, external clock input, PWM and pulse generator modes
• 16-bit Timer B With: 2 input captures, 2 output compares, PWM and pulse generator modes

Data EEPROM
5.6
Note:
34/247
Data EEPROM readout protection
The readout protection is enabled through an option bit (see option byte section).
When this option is selected, the programs and data stored in the EEPROM memory are
protected against read-out (including a rewrite protection). In Flash devices, when this
protection is removed by reprogramming the option byte, the entire Program memory and
EEPROM is first automatically erased.
Both program memory and data EEPROM are protected using the same option bit.
Figure 10. Data EEPROM programming cycle
Note 1: refer to
INTERNAL
PROGRAMMING
VOLTAGE
Programming of EEPROM data on page 244
WRITE OF
LATCHES
DATA
ERASE CYCLE
Doc ID 12321 Rev 5
READ OPERATION NOT POSSIBLE
All interrupts must be masked
t
PROG
WRITE CYCLE
1)
ST72344xx ST72345xx
READ OPERATION POSSIBLE
I bit in CC register
E2PGM
E2LAT