AT28BV64B-25JI

Manufacturer Part NumberAT28BV64B-25JI
Description
ManufacturerATMEL [ATMEL Corporation]
AT28BV64B-25JI datasheet
 


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Features
Single 2.7V to 3.6V Supply
Hardware and Software Data Protection
Low Power Dissipation
– 15 mA Active Current
– 20 µA CMOS Standby Current
Fast Read Access Time - 200 ns
Automatic Page Write Operation
– Internal Address and Data Latches for 64 Bytes
– Internal Control Timer
Fast Write Cycle Times
– Page Write Cycle Time: 10 ms Maximum
– 1 to 64 Byte Page Write Operation
DATA Polling for End of Write Detection
High-reliability CMOS Technology
– Endurance: 100,000 Cycles
– Data Retention: 10 Years
JEDEC Approved Byte-wide Pinout
Commercial and Industrial Temperature Ranges
Description
The AT28BV64B is a high-performance electrically erasable programmable read only
memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manu-
factured with Atmel’s advanced nonvolatile CMOS technology, the device offers
access times to 200 ns with power dissipation of just 54 mW. When the device is
deselected, the CMOS standby current is less than 20 µA.
Pin Configurations
Pin Name
Function
A0 - A12
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
I/O0 - I/O7
Data Inputs/Outputs
NC
No Connect
DC
Don’t Connect
PLCC
Top View
A6
5
29
A8
A5
6
28
A9
A4
7
27
A11
A3
8
26
NC
A2
9
25
OE
A1
10
24
A10
A0
11
23
CE
NC
12
22
I/O7
I/O0
13
21
I/O6
Note:
PLCC package pins 1 and 17
are DON’T CONNECT.
(continued)
PDIP, SOIC
Top View
NC
1
28
VCC
A12
2
27
WE
A7
3
26
NC
A6
4
25
A8
A5
5
24
A9
A4
6
23
A11
A3
7
22
OE
A2
8
21
A10
A1
9
20
CE
A0
10
19
I/O7
I/O0
11
18
I/O6
I/O1
12
17
I/O5
I/O2
13
16
I/O4
GND
14
15
I/O3
TSOP
Top View
OE
1
28
A10
A11
2
27
CE
A9
3
26
I/O7
A8
4
25
I/O6
NC
5
24
I/O5
WE
6
23
I/O4
VCC
7
22
I/O3
NC
8
21
GND
A12
9
20
I/O2
A7
10
19
I/O1
A6
11
18
I/O0
A5
12
17
A0
A4
13
16
A1
A3
14
15
A2
64K (8K x 8)
Battery-Voltage
Parallel EEPROM
with Page Write
and Software
Data Protection
AT28BV64B
3-Volt, 64K
2
E
PROM with
Data Protection
Rev. 0299F–05/28/99
1

AT28BV64B-25JI Summary of contents

  • Page 1

    ... Commercial and Industrial Temperature Ranges Description The AT28BV64B is a high-performance electrically erasable programmable read only memory (EEPROM). Its 64K of memory is organized as 8,192 words by 8 bits. Manu- factured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 200 ns with power dissipation of just 54 mW. When the device is deselected, the CMOS standby current is less than 20 µ ...

  • Page 2

    ... The AT28BV64B is accessed like a static RAM for the read or write cycle without the need for external components. The device contains a 64 byte page register to allow writing bytes simultaneously. During a write cycle, the addresses and bytes of data are internally latched, freeing the address and data bus for other operations ...

  • Page 3

    ... WC tion AT28BV64B allows bytes of data to be written into the device during a single internal programming period. A page write operation is initiated in the same manner as a byte write; the first byte written can then be followed additional bytes. Each successive byte must be written within 100 µ ...

  • Page 4

    ... H Condition I/O CC Com 0. Ind MHz OUT -100 µA OH AT28BV64B- - 2.7V to 3. OUT High High Z V High Z IL Min Max Units 10 µA 10 µ ...

  • Page 5

    ... This parameter is characterized and is not 100% tested. AT28BV64B-20 Min - t after the address transition without impact on t ACC after the falling edge of CE without impact pF). L Output Test Load Max 6 12 AT28BV64B AT28BV64B-25 Max Min Max 200 250 200 250 100 ...

  • Page 6

    ... Data, OE Hold Time DH OEH t Time to Data Valid DV t Write Pulse Width High WPH Notes Restriction 2. All byte write operations must be preceded by the SDP command sequence. AC Write Waveforms WE Controlled CE Controlled AT28BV64B 6 Min Max Units 0 ns 100 200 ns 100 ...

  • Page 7

    ... TO ADDRESS 1555 LOAD DATA 55 TO ADDRESS 0AAA LOAD DATA A0 TO ADDRESS 1555 WRITES ENABLED LOAD DATA XX TO (3) ANY ADDRESS LOAD LAST BYTE TO LAST ADDRESS ENTER DATA PROTECT STATE AT28BV64B Min Max Units 100 ns 100 200 ns 100 µs 100 ...

  • Page 8

    ... Symbol Parameter t Data Hold Time Hold Time OEH ( Output Delay OE t Write Recovery Time WR Notes: 1. These parameters are characterized and not 100% tested. 2. See AC Read Characteristics. Data Polling Waveforms AT28BV64B 8 (1)(2)(3) (1) Min Typ Max Units ...

  • Page 9

    ... See AC Read Characteristics. Toggle Bit Waveforms Notes: 1. Toggling either both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used, but the address should not vary. (1) AT28BV64B Min Typ Max 10 10 150 0 Units ns ...

  • Page 10

    ... Ordering Code AT28BV64B-20JC AT28BV64B-20PC AT28BV64B-20SC AT28BV64B-20TC AT28BV64B-20JI AT28BV64B-20PI AT28BV64B-20SI AT28BV64B-20TI AT28BV64B-25JC AT28BV64B-25PC AT28BV64B-25SC AT28BV64B-25TC AT28BV64B-25JI AT28BV64B-25PI AT28BV64B-25SI AT28BV64B-25TI Package and Temperature Combinations JC, JI, PC, PI, SC, SI, TC, TI JC, JI, PC, PI, SC, SI, TC, TI Package Type Package Operation Range 32J Commercial 28P6 ( 28S ...

  • Page 11

    ... SEATING .060(1.52) .140(3.56) .120(3.05) 28T, 28-lead, Plastic Thin Small Outline Package (TSOP) Dimensions in Millimeters and (Inches)* *Controlling dimension: millimeters AT28BV64B 1.47(37.3) 1.44(36.6) PIN 1 1.300(33.02) REF .220(5.59) MAX PLANE .161(4.09) .125(3.18) .065(1.65) .110(2.79) .041(1.04) ...

  • Page 12

    Atmel Headquarters Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL (408) 441-0311 FAX (408) 487-2600 Europe Atmel U.K., Ltd. Coliseum Business Centre Riverside Way Camberley, Surrey GU15 3YL England TEL (44) 1276-686-677 FAX (44) 1276-686-697 Asia Atmel Asia, ...