ST72345C4 STMicroelectronics, ST72345C4 Datasheet - Page 72

• 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

Power-saving modes
9.7
9.7.1
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Register description
AWUFH control/status register (AWUCSR)
Reset value: 0000 0000 (00h)
Bits 7:3 = Reserved.
Bit 2= AWUF Auto-wakeup flag
Bit 1= AWUM Auto-wakeup measurement
Bit 0 = AWUEN Auto-wakeup from Halt Enabled
This bit is set by hardware when the AWU module generates an interrupt and cleared
by software on reading AWUCSR.
0: No AWU interrupt occurred
1: AWU interrupt occurred
This bit enables the AWU RC oscillator and connects internally its output to the ICAP2
input of 16-bit timer A. This allows the timer to be used to measure the AWU RC
oscillator dispersion and then compensate this dispersion by providing the right value in
the AWUPR register.
0: Measurement disabled
1: Measurement enabled
This bit enables the Auto-wakeup from Halt feature: once Halt mode is entered, the
AWUFH wakes up the microcontroller after a time delay defined by the AWU prescaler
value. It is set and cleared by software.
0: AWUFH (Auto-wakeup from Halt) mode disabled
1: AWUFH (Auto-wakeup from Halt) mode enabled
7
0
0
0
Read/Write (except bit 2 read only)
Doc ID 12321 Rev 5
0
0
AWU
F
ST72344xx ST72345xx
AWUM
AWUEN
0