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T48C862-R8 Datasheet

  • T48C862-R8

  • MCU

  • Atmel   Atmel

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T48C862-R8
Table 6.
P5xM2, P5xM1 鈥?Port 5x Interrupt Mode/Direction Code
Auxiliary Address: "5"hex, First Write Cycle
Code
3210
xx11
xx01
xx10
xx00
11xx
01xx
10xx
00xx
Function
BP50 in input mode
鈥?/div>
interrupt disabled
BP50 in input mode
鈥?/div>
rising edge interrupt
BP50 in input mode
鈥?/div>
falling edge interrupt
BP50 in output mode
鈥?/div>
interrupt disabled
BP51 in input mode
鈥?/div>
interrupt disabled
BP51 in input mode
鈥?/div>
rising edge interrupt
BP51 in input mode
鈥?/div>
falling edge interrupt
BP51 in output mode
鈥?/div>
interrupt disabled
Second Write Cycle
Code
3210
xx11
xx01
xx10
xx00
11xx
01xx
10xx
00xx
Function
BP52 in input mode
鈥?/div>
interrupt disabled
BP52 in input mode
鈥?/div>
rising edge interrupt
BP52 in input mode
鈥?/div>
falling edge interrupt
BP52 in output mode
鈥?/div>
interrupt disabled
BP53 in input mode
鈥?/div>
interrupt disabled
BP53 in input mode
鈥?/div>
rising edge interrupt
BP53 in input mode
鈥?/div>
falling edge interrupt
BP53 in output mode
鈥?/div>
interrupt disabled
Bi-directional Port 4
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 Figure 31). Two additional multi-
plexes allow data and 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. Figure 31 shows
the internal interfaces to bi-directional Port 4.
Figure 31.
Bi-directional Port 4 and Port 6
I/O Bus
Intx
PxMRy
V
DD
Static
pull-up
*
VDD
Switched
pull-up
*
PIn
POut
I/O Bus
D
Q
PxDATy
S
Master reset
I/O Bus
D
*
BPxy
*
(Direction)
V DD
Static
pull-down
S
Q
Switched
pull-down
*
*
PxCRy
PDir
*
Configurable
37
4590B鈥?BMCU鈥?2/03

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