ST72345C4 STMicroelectronics, ST72345C4 Datasheet - Page 233

• 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

ST72344xx ST72345xx
15.1.2
Table 120. Size of sector 0
OPT1 = FMP_R Read-out protection
OPT0 = FMP_W Flash write protection
Option byte 1
OPT7 = RSTC reset clock cycle selection
OPT6:4 = OSCRANGE[2:0] Oscillator range
Default
value
Readout protection, when selected provides a protection against program memory
content extraction and against write access to Flash memory. Erasing the option bytes
when the FMP_R option is selected will cause the whole memory to be erased first and
the device can be reprogrammed. Refer to the ST7 Flash Programming Reference
Manual and
0: Read-out protection off
1: Read-out protection on
This option indicates if the Flash program memory is write protected.
Warning: When this option is selected, the program memory (and the option bit itself)
can never be erased or programmed again.
0: Write protection off
1: Write protection on
This option bit selects the number of CPU cycles inserted during the reset phase and
when exiting Halt mode. For resonator oscillators, it is advised to select 4096 due to the
long crystal stabilization time.
0: Reset phase with 4096 CPU cycles
1: Reset phase with 256 CPU cycles
When the internal RC oscillator is not selected (Option OSC=1), these option bits
select the range of the resonator oscillator current source or the external clock source.
Sector 0 size
7
1
2k
4k
6
1
Section 4.5 on page 29
5
1
Option byte 0
4
1
3
1
Doc ID 12321 Rev 5
2
1
SEC1
1
0
for more details
1
1
Device configuration and ordering information
0
0
7
1
6
1
5
1
Option byte 1
4
1
SEC0
3
0
0
1
2
1
1
1
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0
1