upd43256b-x Renesas Electronics Corporation., upd43256b-x Datasheet
upd43256b-x
Related parts for upd43256b-x
upd43256b-x Summary of contents
Page 1
EXTENDED TEMPERATURE OPERATION Description μ The PD43256B high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM. μ The PD43256B extended-operating-temperature version of the And A and B versions are low ...
Page 2
Ordering Information Part number Package μ PD43256BGW-70X-9JL 28-pin PLASTIC TSOP(I) μ PD43256BGW-85X-9JL (8x13.4) (Normal bent) μ PD43256BGW-A85X-9JL μ PD43256BGW-A10X-9JL μ PD43256BGW-A12X-9JL μ PD43256BGW-B10X-9JL μ PD43256BGW-B12X-9JL μ PD43256BGW-B15X-9JL μ PD43256BGW-70X-9KL 28-pin PLASTIC TSOP(I) μ PD43256BGW-85X-9KL (8x13.4) (Reverse bent) μ PD43256BGW-A85X-9KL μ ...
Page 3
Pin Configurations (Marking Side) /xxx indicates active low signal. 28-pin PLASTIC TSOP(I) (8x13.4) (Normal bent) /OE 1 A11 A13 5 / A14 8 A12 ...
Page 4
Block Diagram A0 Address buffer A14 I/O1 I/O8 /CS /OE / GND Truth Table /CS /OE /WE × × × Remark × ...
Page 5
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 6
DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) (1/2) Parameter Symbol Input leakage current I/O leakage current I/O / Operating supply current I / CCA1 I / ...
Page 7
DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) (2/2) Parameter Symbol Input leakage current I/O leakage current I/O / Operating supply ...
Page 8
AC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) AC Test Conditions μ μ [ PD43256B-70X, PD43256B-85X] Input Waveform (Rise and Fall Time ≤ 5 ns) 2.4 V 1.5 V 0.6 V Output Waveform 1.5 V Output Load AC characteristics should ...
Page 9
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 10
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 11
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 12
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 13
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 14
Low V Data Retention Characteristics (T CC Parameter Data retention supply voltage Data retention supply current Chip deselection to data retention mode Operation recovery time μ μ 40 °C °C) ≤ ≤ Note ...
Page 15
Package Drawings 28-PIN 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 ...
Page 16
PLASTIC TSOP(I) (8x13. NOTE 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 MAX.) ...
Page 17
Recommended Soldering Conditions Please consult with our sales offices for soldering conditions of the Types of Surface Mount Device μ PD43256BGW-xxX-9JL : 28-pin PLASTIC TSOP(I) (8x13.4) (Normal bent) μ PD43256BGW-xxX-9KL : 28-pin PLASTIC TSOP(I) (8x13.4) (Reverse bent) μ PD43256BGW-AxxX-9JL : ...
Page 18
Revision History Edition/ Page Type of Date This Previous revision edition edition 6th edition/ p.1 p.1 Deletion Jun. 2006 18 Location (Previous edition → This edition) − Description of Version X has been deleted. Data Sheet M11012EJ6V0DS μ PD43256B-X Description ...
Page 19
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 20
The information in this document is current as of June, 2006. 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 ...