ATAM862P-TNSY4D Atmel, ATAM862P-TNSY4D Datasheet - Page 40

• Manufacturer Part Number: ATAM862P-TNSY4D
• Description: IC MCU FLASH 4K TX 433MHZ 24SSOP
• Manufacturer: Atmel

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

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