AT29C020-70PI Atmel, AT29C020-70PI Datasheet - Page 12

• Manufacturer Part Number: AT29C020-70PI
• Description: IC FLASH 2MBIT 70NS 32DIP
• Manufacturer: Atmel

Specifications of AT29C020-70PI

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 2M (256K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Software Product Identification Entry
Software Product Identification Exit
Notes:
12
1. Data Format: I/O15 - I/O0 (Hex);
2. A1 - A17 = V
3. The device does not remain in identification mode
4. The device returns to standard operation mode.
5. Manufacturer Code is 1F. The Device Code is DA.
AT29C020
Address Format: A14 - A0 (Hex).
Manufacturer Code is read for A0 = V
Device Code is read for A0 = V
if powered down.
ADDRESS 2AAA
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
LOAD DATA 55
LOAD DATA 90
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
PAUSE 10 mS
LOAD DATA F0
LOAD DATA 55
PAUSE 10 mS
TO
TO
TO
TO
TO
TO
IL
.
ENTER PRODUCT
IDENTIFICATION
MODE
EXIT PRODUCT
IDENTIFICATION
MODE
(2)(3)(5)
(4)
IH
.
IL
(1)
;
(1)
Boot Block Lockout
Feature Enable Algorithm
Notes:
ADDRESS 00000H
1. Data Format: I/O7 - I/O0 (Hex);
2. Lockout feature set on lower address boot block.
3. Lockout feature set on higher address boot block.
LOAD DATA 00
PAUSE 20 mS
Address Format: A14 - A0 (Hex).
TO
(2)
ADDRESS 2AAA
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA 80
LOAD DATA 55
LOAD DATA 40
TO
TO
TO
TO
TO
TO
ADDRESS 3FFFFH
LOAD DATA FF
PAUSE 20 mS
(1)
TO
0291N–FLASH–07/02
(3)