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Integrated Device Technology Electronic Components Datasheet

IDT70P258 Datasheet

(IDT70P248 / IDT70P258) VERY LOW POWER 1.8V 8K/4K x 16 DUAL-PORT STATIC RAM

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IDT70P258 pdf
VERY LOW POWER 1.8V
8K/4K x 16 DUAL-PORT
STATIC RAM
IDT70P258/248L
Features
True Dual-Ported memory cells which allow simultaneous
reads of the same memory location
High-speed access
– Industrial: 55ns (max.)
Low-power operation
IDT70P258/248L
Active: 27mW (typ.)
Standby: 3.6µW (typ.)
Separate upper-byte and lower-byte control for multiplexed
bus compatibility
IDT70P258/248 easily expands data bus width to 32 bits or
more using the Master/Slave select when cascading more
than one device
Supports 3.0V, 2.5V and 1.8V I/O's
M/S = VDD for BUSY output flag on Master
M/S = VSS for BUSY input on Slave
Input Read Register
Output Drive Register
BUSY and Interrupt Flag
On-chip port arbitration logic
Full on-chip hardware support of semaphore signaling
between ports
Fully asynchronous operation from either port
LVTTL-compatible, single 1.8V (±100mV) power supply
Available in 100 Ball 0.5mm-pitch BGA
Industrial temperature range (-40°C to +85°C)
Functional Block Diagram
R/WL
UBL
R/WR
UBR
LBL
CEL
OEL
LBR
CER
OER
I/O8L-I/O15L
I/O0L-I/O7L
BUSYL(2,3)
A12L(1)
A0L
I/O
Control
I/O
Control
Address
Decoder
MEMORY
ARRAY
Address
Decoder
CEL
OEL
R/WL
IRR0,IRR1
CEL
OEL
R/WL
13
SEML
INTL(3)
NOTES:
1. A12X is a NC for IDT70P248.
2. (MASTER): BUSY is output; (SLAVE): BUSY is input.
3. BUSY outputs and INT outputs are non-tri-stated push-pull.
©2004 Integrated Device Technology, Inc.
INPUT
READ REGISTER
AND
OUTPUT
DRIVE REGISTER
SFEN
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
M/S
1
CER
OER
R/WR
OD R0 - ODR4
13
CER
OER
R/WR
,
I/O8R-I/O15R
I/O0R-I/O7R
BUSYR(2,3)
A12R(1)
A0R
SEMR
INTR(3)
5675 drw 01
APRIL 2004
DSC-5675/4


Integrated Device Technology Electronic Components Datasheet

IDT70P258 Datasheet

(IDT70P248 / IDT70P258) VERY LOW POWER 1.8V 8K/4K x 16 DUAL-PORT STATIC RAM

No Preview Available !

IDT70P258 pdf
IDT70P258/248L
Low Power 1.8V 8K/4K x 16 Dual-Port Static RAM
Industrial Temperature Range
Description
The IDT70P258/248 is a very low power 8K/4K x 16 Dual-Port
Static RAM. The IDT70P258/248 is designed to be used as a stand-alone
128/64K-bit Dual-Port SRAM or as a combination MASTER/SLAVE Dual-
Port SRAM for 32-bit-or-more word systems. Using the IDT MASTER/
SLAVE Dual-Port SRAM approach in 32-bit or wider memory system
applications results in full-speed, error-free operation without the need for
additional discrete logic.
This device provides two independent ports with separate control,
address, and I/O pins that permit independent, asynchronous access for
reads or writes to any location in memory. An automatic power down
featurecontrolledby CE permitstheon-chipcircuitryofeachporttoenter
a very low standby power mode.
Fabricated using IDT’s CMOS high-performance technology,
these devices typically operate on only 27mW of power.
The IDT70P258/248 is packaged in a 100 ball 0.5mm- pitch Ball
Grid Array. The package is a 1mm thick and designed to fit in wireless
handset applications.
Pin Configurations(2,3,4)
70P258/248BY
BY-100
09/04/03
A1 A2
A5R A8R
100-Ball 0.5mm Pitch BGA
Top View(5)
A3 A4
A5 A6 A7
A8 A9
A10
A11R UBR Vss SEMR I/O15R I/O12R I/O10R Vss
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
A3R A4R A7R A9R CER R/WR OER VDD I/O9R I/O6R
C1 C2 C3 C4 C5 C6 C7 C8 C9 C10
A0R A1R A2R A6R LBR IRR1 I/O14R I/O11R I/O7R Vss
D1 D2 D3 D4 D5 D6 D7 D8 D9 D10
ODR4 ODR2 BUSYR INTR A10R A12R(1) I/O13R I/O8R I/O5R I/O2R
E1 E2 E3 E4 E5 E6 E7 E8 E9 E10
Vss M/S ODR3 INTL Vss Vss I/O4R VDD I/O1R Vss
F1 F2 F3 F4 F5 F6 F7 F8 F9 F10
SFEN ODR1 BUSYL A1L VDD Vss I/O3R I/O0R I/O15L VDDQL
G1 G2 G3 G4 G5 G6 G7 G8 G9 G10
ODR0 A2L A5L A12L(1) OEL I/O3L I/O11L I/O12L I/O14L I/O13L
H1 H2 H3 H4 H5 H6 H7 H8 H9 H10
A0L A4L A9L LBL CEL I/O1L VDDQL NC NC I/O10L
J1 J2 J3 J4 J5 J6 J7 J8 J9 J10
A3L A7L A10L IRR0 VDD Vss I/O4L I/O6L I/O8L I/O9L
K1 K2 K3 K4 K5 K6 K7 K8 K9 K10
A6L A8L A11L UBL SEML R/WL I/O0L I/O2L I/O5L I/O7L
NOTES:
1. A12X is a NC for IDT70P248.
2. All VDD pins must be connected to power supply.
3. All VSS pins must be connected to ground supply.
4. BY100-1 package body is approximately 6mm x 6mm x 1mm, ball pitch 0.5mm.
5. This package code is used to reference the package diagram.
6. This text does not indicate orientation of the actual part-marking.
5675 drw 02b
,
6.242


Part Number IDT70P258
Description (IDT70P248 / IDT70P258) VERY LOW POWER 1.8V 8K/4K x 16 DUAL-PORT STATIC RAM
Maker Integrated Device Technology
Total Page 23 Pages
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