UPD43256BCZ-85L Renesas Electronics America, UPD43256BCZ-85L Datasheet

UPD43256BCZ-85L

Manufacturer Part Number
UPD43256BCZ-85L
Description
Manufacturer
Renesas Electronics America
Datasheet

Specifications of UPD43256BCZ-85L

Density
256Kb
Access Time (max)
85ns
Sync/async
Asynchronous
Architecture
Not Required
Clock Freq (max)
Not RequiredMHz
Operating Supply Voltage (typ)
5V
Address Bus
15b
Package Type
PDIP
Operating Temp Range
0C to 70C
Number Of Ports
1
Supply Current
45mA
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temperature Classification
Commercial
Mounting
Through Hole
Pin Count
28
Word Size
8b
Number Of Words
32K
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
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UPD43256BCZ-85L
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Quantity:
6 236
Part Number:
UPD43256BCZ-85L
Manufacturer:
NEC
Quantity:
1 000
Part Number:
UPD43256BCZ-85L
Manufacturer:
NEC
Quantity:
20 000
Document No. M10770EJFV0DS00 (15th edition)
Date Published November 2008
Printed in Japan
Description
Features
• 32,768 words by 8 bits organization
• Fast access time: 70, 85, 100, 120 ns (MAX.)
• Low voltage operation (A version: V
• Low V
• /OE input for easy application
Notes 1. T
μ
μ
μ
μ
The
Battery backup is available. And A and B versions are wide voltage operations.
The
PD43256B-xxL
PD43256B-xxLL
PD43256B-Axx
PD43256B-Bxx
Part number
μ
μ
2. Access time: 85 ns (MAX.) (V
PD43256B is a high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM.
PD43256B is packed in 28-pin PLASTIC DIP, 28-pin PLASTIC SOP and 28-pin PLASTIC TSOP (I) (8 x 13.4 mm).
CC
data retention: 2.0 V (MIN.)
A
≤ 40 °C, V
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Note2
85, 100
CC
Access time
= 3.0 V
ns (MAX.)
100, 120
70, 85
Note2
, 120
256K-BIT CMOS STATIC RAM
Note2
CC
CC
= 3.0 to 5.5 V, B version: V
Operating supply Operating ambient
= 4.5 to 5.5 V)
32K-WORD BY 8-BIT
4.5 to 5.5
3.0 to 5.5
2.7 to 5.5
voltage
DATA SHEET
V
temperature
0 to 70
°C
CC
MOS INTEGRATED CIRCUIT
= 2.7 to 5.5 V)
At operating
mA (MAX.)
45
μ
PD43256B
Supply current
At standby
μ
A (MAX.)
50
15
At data retention
μ
A (MAX.)
1990, 1993, 1994
3
2
Note1

Related parts for UPD43256BCZ-85L

UPD43256BCZ-85L Summary of contents

Page 1

Description μ The PD43256B is a high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM. Battery backup is available. And A and B versions are wide voltage operations. μ The PD43256B is packed in ...

Page 2

Ordering Information Part number Package μ PD43256BCZ-70L 28-pin PLASTIC DIP μ PD43256BCZ-85L (15.24 mm (600)) μ PD43256BCZ-70LL μ PD43256BCZ-85LL μ PD43256BGU-70L 28-pin PLASTIC SOP μ PD43256BGU-85L (11.43 mm (450)) μ PD43256BGU-70LL μ PD43256BGU-85LL μ PD43256BGU-A85 μ PD43256BGU-A10 μ PD43256BGU-A12 μ ...

Page 3

Pin Configurations (Marking Side) /xxx indicates active low signal. 28-pin PLASTIC DIP (15.24 mm (600)) A14 A12 I/O1 I/O2 I/O3 GND Remark Refer to Package Drawings for the 1-pin index mark. μ ...

Page 4

A14 A12 I/O1 I/O2 I/O3 GND Remark Refer to Package Drawings for the 1-pin index mark. 4 28-pin PLASTIC SOP (11.43 mm (450)) μ [ PD43256BGU-xxL ] μ [ PD43256BGU-xxLL ] μ ...

Page 5

PLASTIC TSOP (I) (8x13.4) (Normal bent) μ [ PD43256BGW-xxLL-9JL ] μ [ PD43256BGW-Axx-9JL ] μ [ PD43256BGW-Bxx-9JL ] μ [ PD43256BGW-xxLL-9JL-A ] μ [ PD43256BGW-Axx-9JL-A ] μ [ PD43256BGW-Bxx-9JL-A ] /OE 1 A11 A13 ...

Page 6

Block Diagram A0 Address buffer A14 I/O1 I/O8 /CS /OE / GND Truth Table /CS /OE /WE × × × Remark × ...

Page 7

Electrical Specifications Absolute Maximum Ratings Parameter Symbol Supply voltage Input / Output voltage Operating ambient temperature Storage temperature Note –3.0 V (MIN.) (Pulse width : 50 ns) Caution Exposing the device to stress above those listed in Absolute Maximum Rating ...

Page 8

DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) (1/2) Parameter Symbol Input leakage current I/O leakage current I/O / Operating supply ...

Page 9

DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) (2/2) Parameter Symbol Input leakage current I/O leakage current I/O / Operating ...

Page 10

AC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) AC Test Conditions μ μ [ PD43256B-70L, PD43256B-85L, Input Waveform (Rise and Fall Time ≤ 5 ns) 2.2 V 1.5 V 0.8 V Output Waveform Output Load AC characteristics should be measured ...

Page 11

Read Cycle (1/2) Parameter Symbol Read cycle time t RC Address access time t AA /CS access time t ACS /OE access time t OE Output hold from address change t OH /CS to output in low impedance t CLZ ...

Page 12

Read Cycle Timing Chart Address (Input) /CS (Input) /OE (Input) I/O (Output) Remark In read cycle, /WE should be fixed to high level ACS t CLZ OLZ High impedance Data Sheet ...

Page 13

Write Cycle (1/2) Parameter Symbol Write cycle time t WC /CS to end of write t CW Address valid to end of write t AW Write pulse width t WP Data valid to end of write t DW Data hold ...

Page 14

Write Cycle Timing Chart 1 (/WE Controlled) Address (Input) /CS (Input /WE (Input) I/O (Input / Output) Indefinite data out Cautions 1. /CS or /WE should be fixed to high level during address transition. 2. When I/O pins ...

Page 15

Write Cycle Timing Chart 2 (/CS Controlled) Address (Input) /CS (Input) /WE (Input) High impedance I/O (Input) Cautions 1. /CS or /WE should be fixed to high level during address transition. 2. When I/O pins are in the output state, ...

Page 16

Low V Data Retention Characteristics (T CC Parameter Symbol Data retention supply voltage V CCDR Data retention supply current I CCDR Chip deselection t CDR to data retention mode Operation recovery time t R μ 40 °C) Notes 1. 3 ...

Page 17

Package Drawings 28-PIN PLASTIC DIP (15.24 mm (600 NOTES 1. Each lead centerline is located within 0. its true position (T.P.) at maximum material condition. 2. Item "K" ...

Page 18

PLASTIC SOP (11.43 mm (450 NOTE Each lead centerline is located within 0. its true position (T.P.) at maximum material condition ...

Page 19

PLASTIC TSOP(I) (8x13. NOTES 1. Each lead centerline is located within 0. its true position (T.P.) at maximum material condition. 2. "A" excludes mold flash. (Includes mold flash : 8.4mm ...

Page 20

Recommended Soldering Conditions Please consult with our sales offices for soldering conditions of the Types of Surface Mount Device μ PD43256BGU-xxL : 28-pin PLASTIC SOP (11.43 mm (450)) μ PD43256BGU-xxLL : 28-pin PLASTIC SOP (11.43 mm (450)) μ PD43256BGU-Axx : ...

Page 21

Revision History Edition/ Page Date This Previous edition edition 15th edition/ through through Nov. 2008 Type of Description revision Modification Ordering Information revised. Data Sheet M10770EJFV0DS μ PD43256B 21 ...

Page 22

MEMO ] 22 Data Sheet M10770EJFV0DS μ PD43256B ...

Page 23

NOTES FOR CMOS DEVICES 1 VOLTAGE APPLICATION WAVEFORM AT INPUT PIN Waveform distortion due to input noise or a reflected wave may cause malfunction. If the input of the CMOS device stays in the area between V malfunction. Take care ...

Page 24

The information in this document is current as of November, 2008. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC Electronics data sheets or data books, etc., for the most ...

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