AT89LP216-20PI datasheet(17/90 Pages) ATMEL

tên linh kiện	AT89LP216-20PI

Giải thích chi tiết về linh kiện	Microcontroller with 2K Bytes Flash

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nhà sản xuất	ATMEL [ATMEL Corporation]

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3621A–MICRO–6/06

AT89LP216 [Preliminary]

Figure 11-3. Reset Recovery from Power-down.

Table 11-1.

PCON

– Power Control Register

PCON = 87H

Reset Value = 000X 0000B

Not Bit Addressable

SMOD1

SMOD0

PWDEX

POF

GF1

GF0

IDL

Bit

543

PWD

RST

XTAL1

tSUT

Internal

Clock

Internal

Reset

Symbol

Function

SMOD1

Double Baud Rate bit. Doubles the baud rate of the UART in Modes 1, 2, or 3.

SMOD0

Frame Error Select. When SMOD0 = 1, SCON.7 is SM0. When SMOD0 = 1, SCON.7 is FE. Note that FE will be set after

a frame error regardless of the state of SMOD0.

PWDEX

Power-down Exit Mode. When PWDEX = 1, wake up from Power-down is externally controlled. When PWDEX = 1, wake

up from Power-down is internally timed.

POF

Power Off Flag. POF is set to “1” during power up (i.e. cold reset). It can be set or reset under software control and is not

affected by RST or BOD (i.e. warm resets).

GF1, GF0

General-purpose Flags

Power-down bit. Setting this bit activates power-down operation.

IDL

Idle Mode bit. Setting this bit activates Idle mode operation

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