HIGH-SPEED
2K x 9 DUAL-PORT
STATIC RAM
WITH BUSY & INTERRUPT
IDT70121S/L
IDT70125S/L
Features
Fully asychronous operation from either port
?
High-speed access
– Commercial: 25/35/45/55ns (max.)
– Industrial: 35ns (max.)
Low-power operation
– IDT70121/70125S
Active: 675mW (typ.)
Standby: 5mW (typ.)
– IDT70121/70125L
Active: 675mW (typ.)
MASTER IDT70121 easily expands data bus width to 18 bits or
more using SLAVE IDT70125 chip
On-chip port arbitration logic (IDT70121 only)
BUSY output flag on Master; BUSY input on Slave
INT flag for port-to-port communication
Battery backup operation—2V data retention
TTL-compatible, signal 5V (±10%) power supply
Available in 52-pin PLCC
Industrial temperature range (–40°C to +85°C) is available for
BUSY L
BUSY R
Standby:1mW(typ.)
Functional Block Diagram
OE L
CE L
R/ W L
I/O 0L - I/O 8L
(1,2)
I/O
Control
selected speeds
Green parts available, see ordering information
OE R
CE R
R/ W R
I/O 0R -I/O 8R
I/O
Control
(1,2)
A 10L
A 0L
Address
Decoder
MEMORY
ARRAY
Address
Decoder
A 10R
A 0R
11
11
CE L
OE L
R/ W L
ARBITRATION
INTERRUPT
LOGIC
CE R
OE R
R/ W R
INT L
(2)
INT R
(2)
2654 drw 01
NOTES:
1. 70121 (MASTER): BUSY is non-tri-stated push-pull output.
70125 (SLAVE): BUSY is input.
2. INT is non-tri-stated push-pull output.
OCTOBER 2008
1
?2008 Integrated Device Technology, Inc.
DSC 2654/11
相关PDF资料
IDT7014S12JG IC SRAM 36KBIT 12NS 52PLCC
IDT7015L35G IC SRAM 72KBIT 35NS 68PGA
IDT7016L35G IC SRAM 144KBIT 35NS 68PGA
IDT7019L20PFI IC SRAM 1.125MBIT 20NS 100TQFP
IDT7024L55G IC SRAM 64KBIT 55NS 84PGA
IDT7025L55G IC SRAM 128KBIT 55NS 84PGA
IDT70261L20PFI IC SRAM 256KBIT 20NS 100TQFP
IDT7026L20G IC SRAM 256KBIT 20NS 84PGA
相关代理商/技术参数
IDT70125L25JG8 制造商:Integrated Device Technology Inc 功能描述:IC SRAM 18KBIT 25NS 52PLCC
IDT70125L25JGI 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:HIGH-SPEED 2K x 9 DUAL-PORT STATIC RAM WITH BUSY & INTERRUPT
IDT70125L25L52 制造商:未知厂家 制造商全称:未知厂家 功能描述:x9 Dual-Port SRAM
IDT70125L35J 功能描述:IC SRAM 18KBIT 35NS 52PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:72 系列:- 格式 - 存储器:RAM 存储器类型:SRAM - 同步 存储容量:9M(256K x 36) 速度:75ns 接口:并联 电源电压:3.135 V ~ 3.465 V 工作温度:-40°C ~ 85°C 封装/外壳:100-LQFP 供应商设备封装:100-TQFP(14x14) 包装:托盘 其它名称:71V67703S75PFGI
IDT70125L35J8 功能描述:IC SRAM 18KBIT 35NS 52PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:72 系列:- 格式 - 存储器:RAM 存储器类型:SRAM - 同步 存储容量:9M(256K x 36) 速度:75ns 接口:并联 电源电压:3.135 V ~ 3.465 V 工作温度:-40°C ~ 85°C 封装/外壳:100-LQFP 供应商设备封装:100-TQFP(14x14) 包装:托盘 其它名称:71V67703S75PFGI
IDT70125L35JG 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:HIGH-SPEED 2K x 9 DUAL-PORT STATIC RAM WITH BUSY & INTERRUPT
IDT70125L35JGI 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:HIGH-SPEED 2K x 9 DUAL-PORT STATIC RAM WITH BUSY & INTERRUPT
IDT70125L35JI 功能描述:IC SRAM 18KBIT 35NS 52PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:72 系列:- 格式 - 存储器:RAM 存储器类型:SRAM - 同步 存储容量:9M(256K x 36) 速度:75ns 接口:并联 电源电压:3.135 V ~ 3.465 V 工作温度:-40°C ~ 85°C 封装/外壳:100-LQFP 供应商设备封装:100-TQFP(14x14) 包装:托盘 其它名称:71V67703S75PFGI