ST72344S4 STMicroelectronics, ST72344S4 Datasheet - Page 73

• Manufacturer Part Number: ST72344S4
• Description: 8-bit MCU
• Manufacturer: STMicroelectronics

Specifications of ST72344S4

• 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
9.7.2
Table 25.
Address
002Eh
002Fh
(Hex.)
AWUCSR
Reset value
AWUPR
Reset value
Register
AWUFH prescaler register (AWUPR)
Reset value: 1111 1111 (FFh)
Bits 7:0= AWUPR[7:0] Auto-wakeup Prescaler
Table 24.
1. If 00h is written to AWUPR, depending on the product, an interrupt is generated immediately after a HALT
In AWU mode, the period that the MCU stays in Halt mode (t
This prescaler register can be programmed to modify the time that the MCU stays in Halt
mode before waking up automatically.
AWU register map and reset values
label
AWUPR7
instruction, or the AWUPR remains unchanged.
These 8 bits define the AWUPR Dividing factor (as explained below:
7
AWUPR[7:0
AWUPR7
AWUPR6
AWUPR dividing factor
7
0
1
FEh
FFh
00h
01h
...
AWUPR6
]
6
0
1
AWUPR5
t
Doc ID 12321 Rev 5
AWUPR5
AWU
5
0
1
=
AWUPR4
64
×
AWUPR
Read/Write
AWUPR4
4
0
1
×
------------------------- -
f
AWUPR3
AWURC
1
AWUPR3
+
Dividing factor
t
3
0
1
RCSTRT
Forbidden
AWUPR2
254
255
AWU
...
AWUPR2
1
AWUF
2
0
1
in
(1)
Figure
Power-saving modes
AWUPR1
AWUPR1
AWUM
33) is defined by
1
0
1
AWUPR0
AWUPR0
AWUEN
0
0
0
1
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