LIFO / FIFO Buffer Register
WESTERN IlIIlG§TAL
c oRp o R A T/ oN
WD1510-00, 01 UfO/F~FO BUFFIER REGISTER
,,514%£@*1@9*("\
£ B ! 4!Q
M @&*i w"%¥ ...
Description
WESTERN IlIIlG§TAL
c oRp o R A T/ oN
WD1510-00, 01 UfO/F~FO BUFFIER REGISTER
,,514%£@*1@9*("\
£ B ! 4!Q
M @&*i w"%¥ as
FEATURES
APPLICATIONS
WORD LENGTH SELECTABLE: 128 OR 132 9 BIT WORD WIDTH o DC TO 650 KHZ (-00),1 MHz (-01) o EMPTY AND FULL FLAGS o THREE-STATE DATA LINES
POINT OF SALE TERMINALS COMPUTER-TO-PERIPHERAL BUFFER o CRT BUFFER MEMORY LINE PRINTER BUFFER INTERRUPT STACK (LIFO MODE)
5-VOLT ONLY NO EXTERNAL CLOCKS REQUIRED TTL COMPATIBLE ON ALL INPUTS AND OUTPUTS o 28 PIN PLASTIC OR CERAMIC DIP
MASTER RESET
GENERAL DESCRIPTION
The WD1510 is an MOSILSI Memory Buffer which is organized as a 9-bit by 128 or 132 word stack. The chip has 2 bidirectional data ports and may be read from or written into either port. Thus, the chip can function as a LIFO from either port or it can function as a FIFO, with data flow from either port A to port B or vice versa. The DIRECTION input pin is used to specify the data flow direction. The WD1510 is fabricated in 5-volt only N-channel technology.
:.:-
a«:
:a:::l m wu.
PIN DEFINITIONS
PIN NUMBER
1
VSS
NAME
2 EMPTY
3 CHIP SELECT PORT A
4 128 OR 132
5 MASTER RESET
6,8,10,12,14, 17,19,21,23
7,9,11,13,15 18,20,22,24
16
25
PORT A DATA LINES
PORT B DATA LINES
Vee DIRECTION
26 SYSTEM SENTINEL™ CHECKOUT
27 CHIP SELECT PORT B
28 FULL
SYMBOL VSS
- -EMPTY
CSA
1281132
MR
PAD-PAS
FUNCTION
Ground
Indicates when there is no data in the buffer
Used to select Port A for either a Read or Write operation
Used t...
Similar Datasheet