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PDF UPD23C32000AL Data sheet ( Hoja de datos )
| Número de pieza | UPD23C32000AL | |
| Descripción | 32M-BIT MASK-PROGRAMMABLE ROM | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD23C32000AL
32M-BIT MASK-PROGRAMMABLE ROM
4M-WORD BY 8-BIT (BYTE MODE) / 2M-WORD BY 16-BIT (WORD MODE)
Description
The µPD23C32000AL is a 33,554,432 bits mask-programmable ROM. The word organization is selectable (BYTE
mode : 4,194,304 words by 8 bits, WORD mode : 2,097,152 words by 16 bits).
The active levels of OE (Output Enable Input) can be selected with mask-option.
The µPD23C32000AL is packed in 48-pin PLASTIC TSOP (I) and 44-pin PLASTIC SOP.
Features
• Word organization
4,194,304 words by 8 bits (BYTE mode)
2,097,152 words by 16 bits (WORD mode)
• Operating supply voltage : VCC = 2.7 V to 3.6 V
Operating supply voltage
VCC
3.0 V ± 0.3 V
3.3 V ± 0.3 V
Access time
ns (MAX.)
100
90
Power supply current (Active mode)
mA (MAX.)
30
Standby current (CMOS level input)
µA (MAX.)
30
Ordering Information
Part Number
µPD23C32000ALGY-xxx-MJH
µPD23C32000ALGY-xxx-MKH
µPD23C32000ALGX-xxx
Package
48-pin PLASTIC TSOP (I) (12 x 18) (Normal bent)
48-pin PLASTIC TSOP (I) (12 x 18) (Reverse bent)
44-pin PLASTIC SOP (15.24 mm (600))
(xxx : ROM code suffix No.)
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.
Document No. M15773EJ4V0DS00 (4th edition)
Date Published February 2003 NS CP(K)
Printed in Japan
The mark shows major revised points.
2001
1 page  
µPD23C32000AL
Input / Output Pin Functions
Pin name
Input / Output
Function
WORD, /BYTE
A0 to A20
(Address inputs)
O0 to O7, O8 to O14
(Data outputs)
O15, A−1
(Data output 15,
LSB Address input)
/CE
(Chip Enable)
/OE or OE or DC
(Output Enable, Don't care)
VCC
Input
The pin for switching WORD mode and BYTE mode.
High level : WORD mode (2M-word by 16-bit)
Low level : BYTE mode (4M-word by 8-bit)
Input
Address input pins.
A0 to A20 are used differently in the WORD mode and the BYTE mode.
WORD mode (2M-word by 16-bit)
A0 to A20 are used as 21 bits address signals.
BYTE mode (4M-word by 8-bit)
A0 to A20 are used as the upper 21 bits of total 22 bits of address signal.
(The least significant bit (A−1) is combined to O15.)
Output Data output pins.
O0 to O7, O8 to O14 are used differently in the WORD mode and the BYTE mode.
WORD mode (2M-word by 16-bit)
The lower 15 bits of 16 bits data outputs to O0 to O14.
(The most significant bit (O15) combined to A−1.)
BYTE mode (4M-word by 8-bit)
8 bits data outputs to O0 to O7 and also O8 to O14 are high impedance.
Output, Input O15, A−1 are used differently in the WORD mode and the BYTE mode.
WORD mode (2M-word by 16-bit)
The most significant output data bus (O15).
BYTE mode (4M-word by 8-bit)
The least significant address bus (A−1).
Input
Chip activating signal.
When the OE is active, output states are following.
High level : High-Z
Low level : Data out
Input
Output enable signal. The active level of OE is mask option. The active level of OE
can be selected from high active, low active and Don’t care at order.
− Supply voltage
GND
− Ground
NC − Not internally connected. (The signal can be connected.)
Data Sheet M15773EJ4V0DS
5
5 Page 
µPD23C32000AL
Read Cycle Timing Chart
A0 to A20,
A−1 Note1
(Input)
/CE (Input)
/OE or OE (Input)
O0 to O7,
O8 to O15 Note3
(Input)
tACC
tSKEW
tACC
tCE tDF Note2
High-Z
tOE
tOH
Data out
High-Z
tSKEW
tSKEW
tACC
tDF Note2
tOH
Data out
tOH
Data out
Notes 1. During WORD mode, A–1 is O15.
2. tDF is the time from inactivation of Chip Enable input (/CE) or Output Enable input (/OE or OE) to
high impedance state output.
3. During BYTE mode, O8 to O14 are high impedance and O15 is A–1.
WORD, /BYTE Switch Timing Chart
A–1 (Input)
High-Z
High-Z
WORD, /BYTE (Input)
tOH
O0 to O7 (Output) Data Out
tDF
O8 to O15 (Output) Data Out
tACC
tOH
Data Out
High-Z
Remark Chip Enable (/CE) and Output Enable (/OE or OE) : Active.
tWB
Data Out
Data Out
Data Sheet M15773EJ4V0DS
11
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| PDF Descargar | [ Datasheet UPD23C32000AL.PDF ] | |
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