AT28BV64-30

Manufacturer Part NumberAT28BV64-30
Description64K 8K x 8 Battery-Voltage CMOS E2PROM
ManufacturerATMEL Corporation
AT28BV64-30 datasheet
 


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Features
2.7V to 3.6V Supply
Full Read and Write Operation
Low Power Dissipation
8 mA Active Current
50 A CMOS Standby Current
Read Access Time - 300 ns
Byte Write - 3 ms
Direct Microprocessor Control
DATA Polling
READY/BUSY Open Drain Output
High Reliability CMOS Technology
Endurance: 100,000 Cycles
Data Retention: 10 Years
JEDEC Approved Byte-Wide Pinout
Commercial and Industrial Temperature Ranges
Description
The AT28BV64 is a low-voltage, low-power Electrically Erasable and Programmable
Read Only Memory specifically designed for battery powered applications. Its 64K of
memory is organized 8,192 words by 8 bits. Manufactured with Atmel’s advanced
nonvolatile CMOS technology, the device offers access times to 200 ns with power
dissipation less than 30 mW. When the device is deselected the standby current is
less than 50 A.
The AT28BV64 is accessed like a Static RAM for the read or write cycles without the
need for external components. During a byte write, the address and data are latched
internally, freeing the microprocessor address and data bus for other operations. Fol-
Pin Configurations
Pin Name
Function
A0 - A12
Addresses
CE
Chip Enable
OE
Output Enable
WE
Write Enable
I/O0 - I/O7
Data Inputs/Outputs
RDY/BUSY
Ready/Busy Output
NC
No Connect
DC
Don’t Connect
PLCC Top View
AT28BV64
(continued)
PDIP, SOIC Top View
TSOP Top View
64K (8K x 8)
Battery-Voltage
CMOS
2
E
PROM
AT28BV64
0493A
2-127

AT28BV64-30 Summary of contents

  • Page 1

    ... When the device is deselected the standby current is less than 50 A. The AT28BV64 is accessed like a Static RAM for the read or write cycles without the need for external components. During a byte write, the address and data are latched internally, freeing the microprocessor address and data bus for other operations. Fol- ...

  • Page 2

    ... Respect to Ground ................... -0.6V to +6.25V All Output Voltages with Respect to Ground .............-0. Voltage on OE and A9 with Respect to Ground ................... -0.6V to +13.5V AT28BV64 2-128 Atmel’s 28BV64 has additional features to ensure high quality and manufacturability. The device utilizes error cor- rection internally for extended endurance and for im- proved data retention characteristics ...

  • Page 3

    ... Device Operation READ: The AT28BV64 is accessed like a Static RAM. When CE and OE are low and WE is high, the data stored at the memory location determined by the address pins is asserted on the outputs. The outputs are put in a high im- pedance state whenever high. This dual line control gives designers increased flexibility in preventing bus contention ...

  • Page 4

    ... Standby Current CMOS Active Current Input Low Voltage IL V Input High Voltage IH V Output Low Voltage OL V Output High Voltage OH AT28BV64 2-130 AT28BV64-30 0°C - 70°C -40°C - 85°C 2. ...

  • Page 5

    ... ACC after the falling 4. This parameter is characterized and is not 100% tested ACC OE . ACC Output Test Load (1) Typ Max AT28BV64 AT28BV64-30 Max 300 300 150 60 Units Conditions OUT Units 2-131 ...

  • Page 6

    ... Address Hold Time AH t Write Pulse Width ( Data Set-up Time Data, OE Hold Time DH OEH t Time to Device Busy DB t Write Cycle Time WC AC Write Waveforms WE Controlled CE Controlled AT28BV64 2-132 Min Max 10 100 150 1000 100 Units ...

  • Page 7

    ... 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 (1) Min 10 10 (2) 0 AT28BV64 Typ Max Units 2-133 ...

  • Page 8

    ... Lead, 0.300" Wide, Plastic Gull Wing, Small Outline (SOIC) 28T 28 Lead, Plastic Thin Small Outline Package (TSOP) AT28BV64 2-134 Ordering Code AT28BV64-30JC AT28BV64-30PC AT28BV64-30SC AT28BV64-30TC AT28BV64-30JI AT28BV64-30PI AT28BV64-30SI AT28BV64-30TI Package and Temperature Combinations JC, JI, PC, PI, SC, SI, TC, TI Package Type Package Operation Range 32J Commercial 28P6 ...