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INPUT/OUTPUT PORTS AND PIN FUNCTIONS

8-2

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

8.1 Outline of Input/Output Ports

The 32185/32186 has a total of 97 input/output ports from P0–P13, P15, P17 and P22 (except P5, which is reserved

for future use). These input/output ports can be used as input or output ports by setting the respective direction

registers.

Each input/output port has double or triple functions shared with other internal peripheral I/O or external bus

interface related signal lines, or multiple functions shared with multi-function peripheral I/Os. Pin functions are

selected depending on the operation mode of the CPU or by setting the operation mode register and peripheral

function select register for the input/output port. (If any internal peripheral I/O has still another function, it is also

necessary to set the register provided for that internal peripheral I/O.)

Abundant port functions are incorporated, including a port input level switching function, port output drive capa-

bility setting function, and noise canceller control function.

Note that before any ports can be used in input mode, this port input function enable bit must be set accordingly.

The input/output ports are outlined below.

Table 8.1.1 Outline of Input/Output Ports

Item

Specification

Number of ports

Total 97 ports

P00–P07

(8 ports)

P10–P17

(8 ports)

P20–P27

(8 ports)

P30–P37

(8 ports)

P41–P47

(7 ports)

P61–P63

(3 ports)

P70–P77

(8 ports)

P82–P87

(6 ports)

P93–P97

(5 ports)

P10

P100–P107

(8 ports)

P11

P110–P117

(8 ports)

P12

P124–P127

(4 ports)

P13

P130–P137

(8 ports)

P15

P150, P153

(2 ports)

P17

P174, P175

(2 ports)

P22

P220, P221, P224, P225

(4 ports)

Port function

The input/output ports can individually be set for input or output mode using the direction control register

provided for each input/output port. (However, P221 is an input-only port.)

Pin function

Shared with peripheral I/O or external bus interface signals to serve dual-functions (or shared with two

or more peripheral I/O functions to serve multiple functions)

Note: • P5, P14, P16, P18-P21 are nonexist.

8.1 Outline of Input/Output Ports

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