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PDF AT29C040A Data sheet ( Hoja de datos )
| Número de pieza | AT29C040A | |
| Descripción | 4-Megabit 512K x 8 5-volt Only 256-Byte Sector CMOS Flash Memory | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
Fast Read Access Time - 100 ns
• 5-Volt-Only Reprogramming
•• Sector Program Operation
Single Cycle Reprogram (Erase and Program)
2048 Sectors (256 bytes/sector)
Internal Address and Data Latches for 256-Bytes
Internal Program Control and Timer
• Hardware and Software Data Protection
• Two 16 KB Boot Blocks with Lockout
• Fast Sector Program Cycle Time - 10 ms
• DATA Polling for End of Program Detection
•• Low Power Dissipation
40 mA Active Current
100 µA CMOS Standby Current
Typical Endurance > 10,000 Cycles
•• Single 5V ± 10% Supply
• CMOS and TTL Compatible Inputs and Outputs
Description
The AT29C040A is a 5-volt-only in-system Flash Programmable and Erasable Read
Only Memory (PEROM). Its 4 megabits of memory is organized as 524,288 words by
8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS EEPROM technology,
the device offers access times up to 100 ns, and a low 220 mW power dissipation.
When the device is deselected, the CMOS standby current is less than 100 µA. The
device endurance is such that any sector can typically be written to in excess of
10,000 times. The programming algorithm is compatible with other devices in Atmel’s
5-volt-only Flash family.
(continued)
4-Megabit
(512K x 8)
5-volt Only
256-Byte Sector
CMOS Flash
Memory
AT29C040A
Pin Configurations
Pin Name Function
A0 - A18 Addresses
CE Chip Enable
OE Output Enable
WE Write Enable
I/O0 - I/O7 Data Inputs/Outputs
NC No Connect
AT29C040A
DIP Top View
TSOP Top View
Type 1
0333E–9/97
1 page  
AT29C040A
AC Read Characteristics
Symbol
tACC
tCE (1)
tOE (2)
tDF (3, 4)
tOH
Parameter
Address to Output Delay
CE to Output Delay
OE to Output Delay
CE or OE to Output Float
Output Hold from OE, CE or Address,
whichever occurred first
AT29C040A-10
Min Max
100
100
0 40
0 25
0
AT29C040A-12
Min Max
120
120
0 50
0 30
0
AT29C040A-15
Min Max
150
150
0 70
0 40
0
Units
ns
ns
ns
ns
ns
AC Read Waveforms (1, 2, 3, 4)
Notes: 1. CE may be delayed up to tACC - tCE after the address
transition without impact on tACC .
2. OE may be delayed up to tCE - tOE after the falling
edge of CE without impact on tCE or by tACC - tOE
after an address change without impact on tACC .
3. tDF is specified from OE or CE whichever occurs first
(CL = 5 pF).
4. This parameter is characterized and is not 100% tested.
Input Test Waveforms and Measurement Level
Output Test Load
tR, tF < 5 ns
Pin Capacitance (f = 1 MHz, T = 25°C) (1)
Typ Max
CIN 4 6
COUT
8 12
Note: 1. This parameter is characterized and is not 100% tested.
Units
pF
pF
Conditions
VIN = 0V
VOUT = 0V
5
5 Page 
Ordering Information
tACC
(ns)
100
ICC (mA)
Active Standby
40 0.1
40 0.3
120 40 0.1
40 0.3
150 40 0.1
40 0.3
Ordering Code
AT29C040A-10PC
AT29C040A-10TC
AT29C040A-10PI
AT29C040A-10TI
AT29C040A-12PC
AT29C040A-12TC
AT29C040A-12PI
AT29C040A-12TI
AT29C040A-15PC
AT29C040A-15TC
AT29C040A-15PI
AT29C040A
Package
32P6
32T
32P6
32T
32P6
32T
32P6
32T
32P6
32P6
Operation Range
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
32P6
32T
Package Type
32 Lead, 0.600" Wide, Plastic Dual Inline Package (PDIP)
32 Lead, Thin Small Outline Package (TSOP)
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AT29C040A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AT29C040 | 4-Megabit 512K x 8 5-volt Only 256-Byte Sector CMOS Flash Memory | ATMEL Corporation |
| AT29C040A | 4-Megabit 512K x 8 5-volt Only 256-Byte Sector CMOS Flash Memory | ATMEL Corporation |
| AT29C040A-10 | 4-Megabit 512K x 8 5-volt Only 256-Byte Sector CMOS Flash Memory | ATMEL Corporation |
| AT29C040A-10PC | 4-Megabit 512K x 8 5-volt Only 256-Byte Sector CMOS Flash Memory | ATMEL Corporation |
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