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ATAM894 Datasheet(PDF) 29 Page - ATMEL Corporation

Part # ATAM894
Description  8k-flash Microcontroller
PDF  97 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATAM894 Datasheet(HTML) 29 Page - ATMEL Corporation

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29
4679D–4BMCU–05/05
ATAM894
Figure 6-6.
Bi-directional Port 4 and Port 6
6.2.4.1
Port 4 Data Register (P4DAT)
6.2.4.2
Port 4 Control Register (P4CR) Byte Write
P4xM2, P4xM1 – Port 4x Interrupt Mode/Direction Code
Master reset
Q
V
DD
BPxy
(1) Flash options
PxDATy
I/O Bus
D
I/O Bus
I/O Bus
Switched
pull-up
Switched
pull-down
S
PxCRy
S
Q
D
PxMRy
POut
(Direction)
PDir
Intx
(1)
PIn
Static
pull-up
Static
pull-down
V
DD
V
DD
(1)
(1)
(1)
(1)
(1)
Primary register address: '4'hex
Bit 3Bit 2Bit 1Bit 0
P4DAT
P4DAT3
P4DAT2
P4DAT1
P4DAT0
Reset value: 1111b
Auxiliary register address: '4'hex
Bit 3Bit 2Bit 1Bit 0
P4CR
First write
cycle
P41M2
P41M1
P40M2
P40M1
Reset value: 1111b
Bit 7Bit 6Bit 5Bit 4
Second write
cycle
P43M2
P43M1
P42M2
P42M1
Reset value: 1111b



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