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¡ Semiconductor

MSM6595A-xxx

PIN DESCRIPTIONS

Type

Description

—

Power supply pin. Insert a bypass capacitor of 0.1 mF or more between this

pin and the GND pin.

—

Ground pin

I

(SERIAL ADDRESS) This pin inputs the starting X address of a read operation.

Addressing in units of 1024 words is possible. The 1024-word address data

can be input as 10-bit (AX0 - AX9) serial data via the SADX pin.

I

I

(SERIAL ADDRESS STROBE) This is the clock input pin which is used to store

the serial address data of the X address into the device's internal register.

(SERIAL ADDRESS STROBE) This is the clock input pin to store the serial

address data of the Y address into the device's internal register.

I

(ADDRESS TRANSFER STROBE) This is the input pin for loading the serial

address data into the internal address counter.

The X and Y addresses are stored at the falling edge of TAS.

Symbol

GND

SADX

SADY

SASX

TAS

(SERIAL ADDRESS) This pin inputs the starting Y address of a read operation.

Addressing in units of 1024 words is possible. The 1024-word address data

can be input as 10-bit (AY0 - AY9) serial data via the SADY pin.

I

SASY

I

(READ CLOCK) This is the clock input pin for reading information out of the data

register. Internal operation starts at the falling edge of RDCK. The information

in the data register is output on the DOUT pin. The internal address counter is

automatically incremented at the falling edge of RDCK.

RDCK

O

(DATA OUT) The data output pin is always kept in a high-impedance state when

RDCK or CS is kept at "H". This pin reflects the "H" or "L" level data being read,

and the current data is held until RDCK is asserted High.

DOUT

I

(CHIP SELECT) Setting this pin to "H" disables all input and output pins. This pin

enables parallel use of multiple serial voice ROMs by connecting the data output pins.

CS

I

Pins for testing. Apply a "L" level to the TEST pin and "H" level to the TEST pin.

O

Pins for testing. Leave these pins open.

SSOP

15

30

12

1

13

14

2

18

28

5

16

27

DIP

9

18

6

1

7

8

2

13

17

4

10

16

SOP

12

24

9

1

10

11

2

15

22

4

13

21

QFJ

9

18

6

1

7

8

2

13

17

4

10

16

3

3

3

3

17

11

14

11

TEST

TESTO1

TEST

TESTO2

Pin

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Condition

Rating

Unit

Power Supply Voltage

Ta = 25°C

–0.3 to +7.0

V

Input Voltage

Ta = 25°C

V

Storage Temperature

—

–55 to +150

°C