器件名称: W55412A
功能描述: VOICE PROM (256K OTP)
文件大小: 50.03KB 共5页
简 介:W55412A VOICE PROM (256K OTP)
GENERAL DESCRIPTION
The W55412A is a 256K × 1 bit one-time programmable (OTP) ROM. The W55412A is designed for easy cascading with Winbond speech ICs to emulate sounds and functions. The W55412A data ROM allows synthesis of messages of up to 12 seconds in duration (not including repetition or silence).
FEATURES
Provides RDP, WRP, and DATA pins to cascade with Winbond speech ICs Data and address are processed in serial form Suitable for low pin count applications (8-pin DIP) Low power consumption: Operating: 3 mA (max.) Standby: 1A (max.) Programming voltage (VPP): 12 to 12.5V Operating voltage range: 3 to 5V Organized as 256K × 1 bit Data access time: 500 nS (max.)
PIN CONFIGURATION
V PP MCLK/PREDATA VSS WRP
1 2 3 4
8 7 6 5
MODE/PGM/CLK VDD
RDP DATA
-1-
Publication Release Date: May 1996 Revision A2
W55412A
PIN DESCRIPTION
NO. PIN NAME I/O Read 1 2 3 4 5 6 7 8 VPP MCLK/PREDATA VSS WRP DATA RDP VDD MODE/PGM/CLK I I/O I I/O I/O I I I NC NC Negative power supply Write clock pulse line Bidirectional data line Read clock pulse line Positive voltage supply NC DESCRIPTION Program/Erase/Repair Logic input Logic input Negative power supply No use No use No use Positive voltage supply Logic input
BLOCK DIAGRAM
MCLK/PREDATA VPP
MODE/PGM/CLK VDD VSS
RDP WRP DATA 9
8 I/O Control/Address Counter/Register
Input Buffer
8
Redundant Array
9
8
Mux
512 X-DEC
Core Array
Y-DEC/ Mux
SenAMP 8
8
1 to 8 DeMux
Decoder
DeMux/Output Buff……
