ATAM862P-TNSY4D Atmel, ATAM862P-TNSY4D Datasheet - Page 40
ATAM862P-TNSY4D
Manufacturer Part Number
ATAM862P-TNSY4D
Description
IC MCU FLASH 4K TX 433MHZ 24SSOP
Manufacturer
Atmel
Datasheet
1.ATAM862P-TNQY4D.pdf
(110 pages)
Specifications of ATAM862P-TNSY4D
Applications
UHF ASK/FSK
Core Processor
MARC4
Program Memory Type
FLASH (4 kB)
Controller Series
MARC4 4-Bit
Ram Size
256 x 4
Interface
SSI
Number Of I /o
11
Voltage - Supply
1.8 V ~ 4 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
24-SSOP
Processor Series
ATAM862x
Core
MARC4
Data Bus Width
4 bit
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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22.4
22.4.1
22.4.2
40
Bi-directional Port 4
ATAM862-4
Port 4 Data Register (P4DAT)
Port 4 Control Register (P4CR) Byte Write
The bi-directional Port 4 is a bitwise configurable I/O port and provides the external pins for the
Timer 2, SSI and the voltage monitor input (VMI). As a normal port, it performs in exactly the
same way as bi-directional Port 2 (see
port direction control to be passed over to other internal modules (Timer 2, VM or SSI). The
I/O-pins for SC and SD line have an additional mode to generate an SSI-interrupt.
All four Port 4 pins can be individually switched by the P4CR register.
internal interfaces to bi-directional Port 4.
Figure 22-5. Bi-directional Port 4 and Port 6
P4xM2, P4xM1 – Port 4x Interrupt mode/direction code
First write cycle
Second write cycle
Master reset
P4DAT3
Bit 3
PDir
I/O Bus
POut
I/O Bus
I/O Bus
Intx
PIn
PxDATy
PxCRy
D
D
P4DAT2
S
S
Bit 2
Q
Q
(Direction)
P41M2
P43M2
Bit 3
Bit 7
PxMRy
P4DAT1
Bit 1
P41M1
P43M1
Bit 2
Bit 6
Figure
P4DAT0
Bit 0
*
P40M2
P42M2
Configurable
Bit 1
Bit 5
22-5). Two additional multiplexes allow data and
V
DD
Primary register address: "4"hex
Auxiliary register address: "4"hex
P40M1
P42M1
Bit 0
Bit 4
*
*
*
pull-down
Switched
Switched
pull-up
Reset value: 1111b
Reset value: 1111b
Reset value: 1111b
*
*
Figure 22-5
V DD
4551G–4BMCU–07/07
V
DD
*
*
Static
shows the
pull-up
Static
pull-down
BPxy
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