ST7LITE20F2 datasheet(62/166 Pages) STMICROELECTRONICS

部件名	ST7LITE20F2

功能描述	8-bit microcontroller with single voltage Flash memory, data EEPROM, ADC, Timers, SPI

PDF	166 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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Doc ID 8349 Rev 5

AWUF prescaler register list (AWUPR)

Read/Write

Reset value: 1111 1111 (FFh)

●

Bits 7:0=

AWUPR[7:0] Auto-wakeup prescaler

These 8 bits define the AWUPR dividing factor (as explained in Table 19: AWU

prescaler below):

In AWU mode, the period that the MCU stays in HALT mode (tAWU in Figure 29: AWUF halt

timing diagram) is defined by:

This prescaler register can be programmed to modify the time that the MCU stays in HALT

mode before waking up automatically.

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.

Bit

−−−

−−

−

Value

AWUPR7 AWUPR6 AWUPR5 AWUPR4 AWUPR3 AWUPR2 AWUPR1 AWUPR0

Table 19.

AWU prescaler

AWUPR[7:0]

Dividing factor

00h

Forbidden

01h

−−

FEh

254

FFh

255

AWU

AWUPR

AWURC

--------------------

RCSTRT

Table 20.

AWU register map and reset values

Address

(Hex.)

label

5432

0049h

AWUPR

Reset value

AWUPR

004Ah

AWUCSR

Reset value

AWUF

AWUM

AWUEN

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