ST7FLU05MCE View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST7FLU05MCE
STMicroelectronics
'ST7FLU05MCE' PDF : 124 Pages View PDF
Power saving modes
ST7LUS5, ST7LU05, ST7LU09
AWUFH prescaler register (AWUPR)
AWUPR
Reset value: 1111 1111 (FFh)
7
6
5
4
3
2
1
0
AWUPR[7:0]
R/W
Table 23. AWUPR register description
Bit
Name
Function
Auto wake-up prescaler
t(s) 7:0 AWUPR[7:0]
These 8 bits define the AWUPR division factor (as explained below).
This prescaler register can be programmed to modify the time that the MCU stays in halt
mode before waking up automatically.
c Note: If 00h is written to AWUPR, depending on the product, an interrupt is generated
u immediately after a HALT instruction, or the AWUPR remains unchanged.
rod ) Table 24. AWUPR division factors
P t(s AWUPR[7:0]
Division factor
lete uc 00h
Forbidden
so rod 01h
1
b P ...
...
- O te FEh
254
) le FFh
255
ct(s bso In AWU mode, the period that the MCU stays in halt mode (tAWU in Figure 32 on page 61) is defined by:
du - O tAWU
=
64 ×
AWUPR ×
------------1-------------
fAWURC
+
tR
CSTRT
Pro t(s) This prescaler register can be programmed to modify the time that the MCU stays in halt mode before
waking up automatically.
lete duc Note:
If 00h is written to AWUPR, depending on the product, an interrupt is generated immediately
after a HALT instruction, or the AWUPR remains unchanged.
bso Pro Table 25. AWU register map and reset values
O te Address (Hex.) Register label 7
6
5
4
3
2
1
0
ole 004Ah
AWUCSR
Reset value
0
0
0
0
AWUF AWUM AWUEN
0
0
0
0
Obs0049h
AWUPR
AWUPR7 AWUPR6 AWUPR5 AWUPR4 AWUPR3 AWUPR2 AWUPR1 AWUPR0
Reset value
1
1
1
1
1
1
1
1
56/124
Share Link: 