|
|
PDF 29C256 Data sheet ( Hoja de datos )
| Número de pieza | 29C256 | |
| Descripción | 256K 32K x 8 5-volt Only CMOS Flash Memory | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de 29C256 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
Features
• Fast Read Access Time – 70 ns
• 5-volt Only Reprogramming
• Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– Internal Address and Data Latches for 64 Bytes
• Internal Program Control and Timer
• Hardware and Software Data Protection
• Fast Program Cycle Times
– Page (64 Byte) Program Time – 10 ms
– Chip Erase Time – 10 ms
• DATA Polling for End of Program Detection
• Low-power Dissipation
– 50 mA Active Current
– 300 µA CMOS Standby Current
• Typical Endurance > 10,000 Cycles
• Single 5V ± 10% Supply
• CMOS and TTL Compatible Inputs and Outputs
• Commercial and Industrial Temperature Ranges
Description
The AT29C256 is a five-volt-only in-system Flash programmable and erasable read
only memory (PEROM). Its 256K of memory is organized as 32,768 words by 8 bits.
Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers
access times to 70 ns with power dissipation of just 275 mW. When the device is
deselected, the CMOS standby current is less than 300 µA. The device endurance is
such that any sector can typically be written to in excess of 10,000 times.
256K (32K x 8)
5-volt Only
Flash Memory
AT29C256
Pin Configurations
Pin Name
A0 - A14
CE
OE
WE
I/O0 - I/O7
NC
DC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
No Connect
Don’t Connect
PLCC and LCC Top View
TSOP Top View
Type 1
OE
A11
A9
A8
A13
A14
VCC
WE
A12
A7
A6
A5
A4
A3
22
23
24
25
26
27
28
1
2
3
4
5
6
7
21 A10
20 CE
19 I/O7
18 I/O6
17 I/O5
16 I/O4
15 I/O3
14 GND
13 I/O2
12 I/O1
11 I/O0
10 A0
9 A1
8 A2
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
NC 12
I/O0 13
29 A8
28 A9
27 A11
26 NC
25 OE
24 A10
23 CE
22 I/O7
21 I/O6
Note: PLCC package pins 1 and 17 are
DON’T CONNECT.
Rev. 0046P–FLASH–10/04
1
1 page  
AT29C256
DC and AC Operating Range
Operating
Temperature (Case)
Com.
Ind.
AT29C256-70
0°C - 70°C
-40°C - 85°C
VCC Power Supply
5V ± 5%
Note:
Not recommended for New Designs.
AT29C256-90
0°C - 70°C
-40°C - 85°C
5V± 10%
AT29C256-12
0°C - 70°C
-40°C - 85°C
5V± 10%
AT29C256-15
0°C - 70°C
-40°C - 85°C
5V± 10%
Operating Modes
Mode
Read
Program(2)
5V Chip Erase
Standby/Write Inhibit
Write Inhibit
Write Inhibit
Output Disable
High Voltage Chip Erase
Product Identification
Hardware
CE OE WE
VIL VIL VIH
VIL VIH VIL
VIL VIH VIL
VIH X(1) X
X X VIH
X VIL X
X VIH X
VIL VH(3) VIL
VIL VIL VIH
Software(5)
Notes:
1. X can be VIL or VIH.
2. Refer to AC Programming Waveforms.
3. VH = 12.0V ± 0.5V.
4. Manufacturer Code: 1F, Device Code: DC.
5. See details under Software Product Identification Entry/Exit.
DC Characteristics
Ai I/O
Ai DOUT
Ai DIN
Ai
X High Z
High Z
X High Z
A1-A14 = VIL, A9 = VH, A0 = VIL
A1-A14 = VIL, A9 = VH, A0 = VIH
A0 = VIL
A0 = VIH
Manufacturer Code(4)
Device Code(4)
Manufacturer Code(4)
Device Code(4)
Symbol
ILI
ILO
ISB1
ISB2
ICC
VIL
VIH
VOL
VOH1
VOH2
Parameter
Input Load Current
Output Leakage Current
VCC Standby Current CMOS
VCC Standby Current TTL
VCC Active Current
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Output High Voltage CMOS
Condition
VIN = 0V to VCC
VI/O = 0V to VCC
CE = VCC - 0.3V to VCC
CE = 2.0V to VCC
f = 5 MHz; IOUT = 0 mA
IOL = 2.1 mA
IOH = -400 µA
IOH = -100 µA; VCC = 4.5V
Min Max Units
10 µA
10 µA
300 µA
3 mA
50 mA
0.8 V
2.0 V
0.45 V
2.4 V
4.2 V
0046P–FLASH–10/04
5
5 Page 
Data Polling Characteristics(1)
Symbol Parameter
tDH
tOEH
tOE
tWR
Notes:
Data Hold Time
OE Hold Time
OE to Output Delay(2)
Write Recovery Time
1. These parameters are characterized and not 100% tested.
2. See tOE spec in AC Read Characteristics.
Data Polling Waveforms
AT29C256
Min Typ Max Units
0 ns
10 ns
ns
0 ns
Toggle Bit Characteristics(1)
Symbol Parameter
tDH
tOEH
tOE
tOEHP
tWR
Notes:
Data Hold Time
OE Hold Time
OE to Output Delay(2)
OE High Pulse
Write Recovery Time
1. These parameters are characterized and not 100% tested.
2. See tOE spec in AC Read Characteristics.
Toggle Bit Waveforms(1)(2)(3)
Min Typ Max Units
0 ns
10 ns
ns
150 ns
0 ns
Notes: 1. Toggling either OE or CE or 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.
0046P–FLASH–10/04
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet 29C256.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| 29C256 | 256K 32K x 8 5-volt Only CMOS Flash Memory | ATMEL Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |