AT29C020-90JC Atmel, AT29C020-90JC Datasheet - Page 13

• Manufacturer Part Number: AT29C020-90JC
• Description: IC FLASH 2MBIT 90NS 32PLCC
• Manufacturer: Atmel

Specifications of AT29C020-90JC

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 2M (256K x 8)
• Speed: 90ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 32-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AT29C02090JC

25. Software Product Identification
26. Software Product Identification
Notes:
0291S–FLASH–11/08
Entry
Exit
1. Data Format: I/O15 - I/O0 (Hex);
2. A1 - A17 = V
3. The device does not remain in identification mode if
4. The device returns to standard operation mode.
5. Manufacturer Code is 1F. The Device Code is DA.
Address Format: A14 - A0 (Hex).
Manufacturer Code is read for A0 = V
Device Code is read for A0 = V
powered down.
(1)
(1)
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA 90
ADDRESS 2AAA
PAUSE 10 mS
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA F0
PAUSE 10 mS
TO
TO
TO
TO
TO
TO
IL
.
ENTER PRODUCT
IDENTIFICATION
MODE
EXIT PRODUCT
IDENTIFICATION
MODE
(2)(3)(5)
(4)
IH
.
IL
;
27. Boot Block Lockout
Notes:
Feature Enable Algorithm
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
AT29C020
TO
(1)
(3)
13