TMP86CS64AFG datasheet(69/202 Pages) TOSHIBA

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Page 59

TMP86CS64AFG

5.4 Port P3 (P37 to P30)

Port P3 is an 8-bit input/output port, which can be configured individually as an input or an output under software

control. Input/output mode is specified by the corresponding bit in the port P3 input/output control register (P3CR).

During reset, the P3CR is initialized to “0”, which configures port P3 as an input mode. The P3 output latches

(P3DR) are also initialized to “1”.

Port P30, P31 and P32 are also used as TC4/PWM4/PDO4, TC5/PWM5/PDO5 and TC6/PWM6/PDO6. When used as

secondary function pin, the input pins (TC4, TC5, TC6) should be set to the input mode and the output pins (PWM4/

PDO4

, PWM5/PDO5, PWM6/PDO6) should be set to the output.

Port P33, P34, P35, P36 and P37 are also used as SCK1, SI1, SO1, SI2 and SO2. When used as secondary function

pin, SCK1 should be set to the input or output mode, SI1 and SI2 should be set to the input mode, SO1 and SO2

should be set to the output mode.

Note 1: i = 7 to 0

Note 2: STOP: bit 7 in SYSCR1, OUTEN: bit 4 in SYSCR1

Figure 5-5 Port P3

Note: When used as an input mode, read-modify-write instructions such as bit manipulate instructions cannot be used. Read-

modify-write instruction writes the all data of 8-bit after read and modified. Because a bit setting input mode reads data of

terminal, the output latch is changed by these instructions.

P3DR

(0003H)

543

P37

SO2

P36

SI2

P35

SO1

P34

SI1

P33

SCK1

P32

TC6

PWM6

PDO6

P31

TC5

PWM5

PDO5

P30

TC4

PWM4

PDO4

(Initial value: 1111 1111)

P3CR

(000BH)

543

P3CR7

P3CR6

P3CR5

P3CR4

P3CR3

P3CR2

P3CR1

P3CR0

(Initial value: 0000 0000)

P3CR

I/O control for port P3

(specified for each bit)

0: Input mode

1: Output mode

R/W

STOP

OUTEN

Data input

Data output

P3CRi

Control output

Control input

Output latch

P3i

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