Datasheet > 70T659

70T659

更新时间： 2023-12-20 18:46:07

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
29页	429K
描述
128K x 36 Async, 3.3V/2.5V Dual-Port RAM, Interleaved I/O's

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70T659 数据手册

70T651/9S

HIGH-SPEED 2.5V

256/128K x 36

ASYNCHRONOUS DUAL-PORT

STATIC RAM

WITH 3.3V 0R 2.5V INTERFACE

◆

On-chip port arbitration logic

Full on-chip hardware support of semaphore signaling

between ports

Fully asynchronous operation from either port

Separate byte controls for multiplexed bus and bus

matching compatibility

Features

◆

True Dual-Port memory cells which allow simultaneous

access of the same memory location

High-speed access

◆

– Commercial:10/12/15ns(max.)

– Industrial:10/12ns(max.)

RapidWrite Mode simplifies high-speed consecutive write

cycles

Dual chip enables allow for depth expansion without

external logic

IDT70T651/9 easily expands data bus width to 72 bits or

more using the Master/Slave select when cascading more

than one device

◆

Sleep Mode Inputs on both ports

Supports JTAG features compliant to IEEE 1149.1

Single 2.5V (±100mV) power supply for core

LVTTL-compatible, selectable 3.3V (±150mV)/2.5V (±100mV)

power supply for I/Os and control signals on each port

Available in a 256-ball Ball Grid Array and 208-ball fine pitch

Ball Grid Array

Industrial temperature range (–40°C to +85°C) is available

for selected speeds

Green parts available, see ordering information

◆

M/S = VIH for BUSY output flag on Master,

M/S = VIL for BUSY input on Slave

Busy and Interrupt Flags

Functional Block Diagram

BE3L

BE3R

BE2R

BE2L

BE1L

BE0L

BE1R

BE0R

B B B B

E E E E

B B B

E E E

2 1 0

CE0L

CE0R

R R R R

CE1L

CE1R

OEL

OER

Dout0-8_L

Dout0-8_R

Dout9-17_L

Dout9-17_R

Dout18-26_R

Dout27-35_R

Dout18-26_L

Dout27-35_L

256/128K x 36

MEMORY

ARRAY

I/O0L- I/O35L

Di n_L

Di n_R

I/O0R -I/O35R

(1)

17L

17R

Address

Decoder

Address

Decoder

ADDR_L

ADDR_R

CE0L

CE1L

ARBITRATION

CE0R

CE1R

TDI

TCK

TMS

TRST

INTERRUPT

SEMAPHORE

LOGIC

JTAG

TDO

R/W

(2,3)

BUSY

SEM

BUSY

SEM

M/S

(3)

INT

CONTROL

LOGIC

(4)

ZZR

ZZL

NOTES:

1. Address A17x is a NC for IDT70T659.

2. BUSY is an input as a Slave (M/S=VIL) and an output when it is a Master (M/S=VIH).

3. BUSY and INT are non-tri-state totem-pole outputs (push-pull).

4869 drw 01

4. The sleep mode pin shuts off all dynamic inputs, except JTAG inputs, when asserted. OPTx, INTx, M/S and the sleep

mode pins themselves (ZZx) are not affected during sleep mode.

MAY 2019

DSC-5632/10

12 3 4 5 6 7...29

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