RES function. HN58C256A Datasheet

HN58C256A function. Datasheet pdf. Equivalent

Part HN58C256A
Description 256k EEPROM (32-kword x 8-bit) Ready/Busy and RES function
Feature HN58C256A Series HN58C257A Series 256k EEPROM (32-kword × 8-bit) Ready/Busy and RES function (HN58C2.
Manufacture Hitachi Semiconductor
Datasheet
Download HN58C256A Datasheet

HN58C256A Series HN58C257A Series 256k EEPROM (32-kword × 8- HN58C256A Datasheet
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HN58C256A
HN58C256A Series
HN58C257A Series
256k EEPROM (32-kword × 8-bit)
Ready/Busy and RES function (HN58C257A)
ADE-203-410D (Z)
Rev. 4.0
Oct. 24, 1997
Description
The Hitachi HN58C256A and HN58C257A are electrically erasable and programmable ROMs organized as
32768-word × 8-bit. They have realized high speed low power consumption and high reliability by
employing advanced MNOS memory technology and CMOS process and circuitry technology. They also
have a 64-byte page programming function to make their write operations faster.
Features
Single 5 V supply: 5 V ±10%
Access time: 85 ns/100 ns (max)
Power dissipation
Active: 20 mW/MHz, (typ)
Standby: 110 µW (max)
On-chip latches: address, data, CE, OE, WE
Automatic byte write: 10 ms max
Automatic page write (64 bytes): 10 ms max
Ready/Busy (only the HN58C257A series)
Data polling and Toggle bit
Data protection circuit on power on/off
Conforms to JEDEC byte-wide standard
Reliable CMOS with MNOS cell technology
105 erase/write cycles (in page mode)
10 years data retention
Software data protection
Write protection by RES pin (only the HN58C257A series)
Industrial versions (Temperatur range: – 20 to 85˚C and – 40 to 85˚C) are also available.



HN58C256A
HN58C256A Series, HN58C257A Series
Ordering Information
Type No.
HN58C256AP-85
HN58C256AP-10
HN58C256AFP-85
HN58C256AFP-10
HN58C256AT-85
HN58C256AT-10
HN58C257AT-85
HN58C257AT-10
Access time
85 ns
100 ns
85 ns
100 ns
85 ns
100 ns
85 ns
100 ns
Package
600 mil 28-pin plastic DIP (DP-28)
400 mil 28-pin plastic SOP (FP-28D)
28-pin plastic TSOP (TFP-28DB)
8 × 14 mm2 32-pin plastic TSOP (TFP-32DA)
Pin Arrangement
HN58C256AP/AFP Series
A14 1
A12 2
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
A2
28 VCC
A1
27 WE
26 A13
A0
I/O0
I/O1
25 A8
24 A9
I/O2
VSS
I/O3
23 A11 I/O4
22 OE
I/O5
I/O6
21 A10 I/O7
20 CE
CE
A10
19 I/O7
I/O0 11
18 I/O6
I/O1 12
17 I/O5
I/O2 13
16 I/O4
VSS 14
15 I/O3
A2
A1
A0
(Top view)
NC
I/O0
I/O1
I/O2
VSS
I/O3
I/O4
I/O5
I/O6
I/O7
NC
CE
A10
15
16
17
18
19
20
21
22
23
24
25
26
27
28
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
HN58C256AT Series
(Top view)
HN58C257AT Series
(Top view)
14 A3
13 A4
12 A5
11 A6
10 A7
9 A12
8 A14
7 VCC
6 WE
5 A13
4 A8
3 A9
2 A11
1 OE
16 A3
15 A4
14 A5
13 A6
12 A7
11 A12
10 A14
9 RDY/Busy
8 VCC
7 RES
6 WE
5 A13
4 A8
3 A9
2 A11
1 OE
2





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