TMP93CS44 datasheet(9/224 Pages) TOSHIBA

9 / 224 page

TMP93CS44/S45

2004-02-10

93CS44-7

Table 2.2.3 Pin Names and Functions (3/3)

Pin Names

Number

of Pins

I/O

Functions

I/O Port 70: I/O port (High current output available)

P70

WAIT

Input WAIT: Pin used to request CPU bus wait (It is active in (1 + N) WAIT mode. Set by the

bus-width/wait control register)

P71 to P77

I/O Port 71 to Port 77: I/O port (High current output available)

AVCC

Input Power supply pin for AD converter

AVSS

Input GND pin for AD converter (0 V)

VREFH

Input Pin for high-level reference voltage input to AD converter

VREFL

Input Pin for low-level reference voltage input to AD converter

NMI

Input Non-maskable interrupt request pin: Interrupt request pin with falling edge. Can also be

operated at falling and rising edges by program.

Input High-frequency oscillator connecting pin

Output High-frequency oscillator connecting pin

RESET

Input Reset: Initializes TMP93CS44/S45. (with pull-up resistor)

ALE

Output Address latch enable. Can be disabled for reducing noise.

CLK

Output Clock output: Outputs “fSYS ÷ 2” clock.

Pulled-up during reset.

Can be disabled for reducing noise.

Input External access:

“0” should be inputted with TMP93CS45.

“1” should be inputted with TMP93CS44.

AM8/

Input Address mode: Selects external data bus width.

(The case of TMP93CS44)

“1” should be inputted. The data bus width for external access is set by chip

select/WAIT control register, port 1 control register.

(The case of TMP93CS45)

“0” should be inputted with fixed 16-bit bus width or 16-bit bus interlarded with 8-bit

bus. “1” should be inputted with fixed 8-bit bus width.

VCC

Input Power supply pin (All VCC pins should be connected with GND (0 V).)

VSS

Input GND pin (0 V) (All VSS pins should be connected with GND (0 V).)

TEST1/TEST2

Output/Input TEST1 should be connected with TEST2 pin. Do not connect to any other pins.

Note:

Built-in pull-up resistors can be released from the pins other than the RESET pin by software.

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