TMP91CW28 datasheet(81/286 Pages) TOSHIBA

Part #	TMP91CW28

Description	Original CMOS 16-Bit Microcontroller

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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81 / 286 page

TMP91CW28

2006-03-24

91CW28-79

Note 1:

P9CR and P9FC do not support

read-modify-write operation.

Note 2:

When a port 9 pin is used in input mode,

the P9 register controls the on-chip pull-up

resistor. A read-modify-write instruction

cannot be executed if at least one pin of

port 9 is placed in input mode. A

read-modify-write instruction may modify

the on-chip pull-up setting for an input pin

depending on the current pin status.

Note 3:

To specify the TXD pin as an open-drain

output, write a 1 to bit1 (for the TXD pin) of

the ODE register. The P94/RXD pin does

not have a register bit for selecting the port

or timer function. The input to the

P94/RXD pin is always directed to the SIO

as serial receive data even when the pin is

used as a general-purpose input pin.

Port 9 Register

7

6

5

4

3

2

1

0

Bit symbol

P96

P95

P94

P93

P92

P91

P90

Read/Write

R/W

Reset value

Data from external port (Output latch register is set to 1)

Function

−

0 (Output latch register)

: Pull-up resistor disabled

1 (Output latch register)

: Pull-up resistor enabled

−

Port 9 Control Register

7

6

5

4

3

2

1

0

Bit symbol

P96C

P95C

P94C

P93C

P92C

P91C

P90C

Read/Write

W

Reset value

0

Function

0: Input

1: Output

Port 9 direction settings

0

Input port

1

Output port

Port 9 Function Register

7

6

5

4

3

2

1

0

Bit symbol

P95F

P93F

P92F

P91F

P90F

Read/Write

W

Reset value

0

Function

0: Port

1: SCLK

output

0: Port

1: TXD

0: Port

1: SCL1

output

0: Port

1: SDA1/SO1

output

0: Port

1: SCK1

output

Figure 3.5.32 Port 9 Registers

P9

(0019H)

P9CR

(001CH)

SCK1 output settings for P90

TXD output settings for P93

P9FC.P93F

1

P9CR.P93C

1

SCLK output settings for P95

P9FC.P95F

1

P9CR.P95C

1

P9FC.P90F

1

P9CR.P90C

1

SDA1/SO1 output settings for P91

P9FC.P91F

1

P9CR.P91C

1

SCL1 output settings for P92

P9FC.P92F

1

P9CR.P92C

1

P9FC

(001DH)

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