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PDF AT29C432-12TI Data sheet ( Hoja de datos )
| Número de pieza | AT29C432-12TI | |
| Descripción | 4 Megabit 5-volt Flash with 256K E2PROM Memory | |
| Fabricantes | ATMEL Corporation | |
| Logotipo |  |
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Features
• ConcurrentFlash™ Memory
Unique Architecture Allows the Flash Array
To Be Read During the E2PROM Write Cycle
• 4 Megabit 5-volt Flash
Configured as a 512K x 8 Memory Array
120 ns Read Access Time
Sector Program Operation
Single Cycle Reprogram (No Erase Necessary)
2048 Sectors, 256-Bytes Wide
10 ms Sector Rewrite
JEDEC Standard Software Data Protection
• 256K bit Full Feature E2PROM
Configured as a 32K x 8 Memory Array
Byte or Page (16 bytes) Write Capability
Write Cycle Time: 10 ms
JEDEC Standard Software Data Protection
Pinout Similar to 32-Pin 4 Mb Flash
•• Data Memory Endurance: 10,000 cycles
Description
The AT29C432 is a CMOS memory specifically designed for applications requiring
both a high density nonvolatile program memory and a smaller nonvolatile data mem-
ory. The AT29C432 provides this in the form of a 4 megabit Flash array integrated
with a 256K bit full featured E2PROM array on the same device. A unique feature of
this device is its concurrent read while writing capability. This provides the host sys-
tem read access to the Flash program memory during the write cycle time of the
E2PROM.
The two memory arrays share all I/O lines, Address lines and OE and WE inputs.
Each memory array has its own Chip Enable input: CEF for the Flash array and CEE
for the E2PROM array.
Additionally, Software Data Protection has been independently implemented for both
arrays and is always enabled. The AT29C432 has a pinout similar to the AT29C040A
Flash memory. A system designer using a Flash memory for program storage and
another smaller, non volatile memory for data storage can easily replace both memo-
ries with the AT29C432.
4 Megabit
5-volt Flash with
256K E2PROM
Memory
AT29C432
ConcurrentFlash™
Preliminary
Pin Configurations
Pin Name Function
A0 - A18 Addresses
OE Output Enable
WE Write Enable
I/O0 - I/O7 Data Inputs/Outputs
CEE
Chip Enable E2PROM
CEF
Chip Enable Flash
NC No Connect
TSOP
Type 1
1 page  
AT29C432
DC and AC Operating Range
Operating
Temperature (Case)
VCC Power Supply
Com.
Ind.
AT29C432-12
0°C - 70°C
-40°C - 85°C
4.5V - 5.5V
AT29C432-15
0°C - 70°C
-40°C - 85°C
4.5V - 5.5V
Operating Modes
Mode
Flash Read
E2PROM Read
Flash Program
E2PROM Program
Standby/Write Inhibit
Program Inhibit
Program Inhibit
Output Disable
CEE
VIH
VIL
VIH
VIL
VIH
X (2)
X
X
Illegal
VIL
Illegal
Product Identification
VIL
CEF
VIL
VIH
VIL
VIH
VIH
X
X
X
VIL
VIL
OE
VIL
VIL
VIH
VIH
X
X
VIL
VIH
VIL
VIH
WE
VIH
VIH
VIL
VIL
X
VIH
X
X
X
X
Hardware
VIH VIL VIL VIH
Software (5)
Notes: 1. For detailed operational timing refer to the appropri-
ate timing diagrams and AC characteristics tables.
2. X indicates input state can be either VIH or VIL.
3. VH = 12.0V ± 0.5V
Ai I/O
Ai DOUT
Ai DOUT
Ai DIN
Ai DIN
X High Z
High Z
DOUT
Undefined
High Z
A1 - A18 = VIL, A9 = VH, (3)
A0 = VIL
A1 - A18 = VIL, A9 = VH, (3)
A0 = VIH
A0 = VIL, A1 - A18 = VIL
A0 = VIH, A1 - A18 = VIL
Manufacturer Code (4)
Device Code (4)
Manufacturer Code (4)
Device Code (4)
4. Manufacturer Code: 1F, Device Code: B4
5. See details under Software Product Identification Entry/Exit.
DC Characteristics
Symbol
ILI
ILO
Parameter
Input Load Current
Output Leakage Current
ISB VCC Standby Current
ICC VCC Active Current
VIL Input Low Voltage
VIH Input High Voltage
VOL Output Low Voltage
VOH Output High Voltage
Condition
VIN = 0V to VCC
VI/O = 0V to VCC
CEE = CEF = VCC - 0.3V
to VCC + 1.0V
f = 5 MHz; IOUT = 0 mA
IOL = 2.1 mA
IOH = -400 µA; VCC = 4.5V
IOH = -100 µA; VCC = 4.5V
Min Max Units
10 µA
10 µA
300 µA
40 mA
0.8 V
2.0 V
0.45 V
2.4 V
4.2 V
5
5 Page 
Ordering Information
tACC
(ns)
120
ICC (mA)
Active Standby
40 0.3
40 0.3
150 40 0.3
40 0.3
Ordering Code
AT29C432-12TC
AT29C432-12TI
AT29C432-15TC
AT29C432-15TI
AT29C432
Package
40T
40T
40T
40T
Operation Range
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Commercial
(0° to 70°C)
Industrial
(-40° to 85°C)
Package Type
40T 40 Lead, Thin Small Outline Package (TSOP)
Packaging Information
40T, 40 Lead, Plastic Thin Small Outline Package
(TSOP)
Dimensions in Millimeters and (Inches) *
*Controlling dimension: millimeters
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AT29C432-12TI.PDF ] | |
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