AT28C010-20JC ATMEL Corporation, AT28C010-20JC Datasheet - Page 8

• Manufacturer Part Number: AT28C010-20JC
• Description: 1 Megabit 128K x 8 Paged CMOS E2PROM
• Manufacturer: ATMEL Corporation

Software Data
Protection Enable Algorithm
Software Protected Program Cycle Waveform
2-238
Notes: 1. A0 - A14 must conform to the addressing sequence
Notes:
1. Data Format: I/O7 - I/O0 (Hex);
2. Write Protect state will be activated at end of write even if no
3. Write Protect state will be deactivated at end of write period
4. 1 to 128-bytes of data are loaded.
Address Format: A14 - A0 (Hex).
other data is loaded.
even if no other data is loaded.
AT28C010 Com/Ind
2. After the command sequence has been issued and a
for the first 3-bytes as shown above.
page write operation follows, the page address inputs
(A7 - A16) must be the same for each high to low
transition of WE (or CE).
LOAD LAST BYTE
ADDRESS 2AAA
ANY ADDRESS
LAST ADDRESS
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
LOAD DATA XX
LOAD DATA 55
LOAD DATA A0
TO
TO
TO
TO
TO
(4)
WRITES ENABLED
ENTER DATA
PROTECT STATE
(1)
(2)
3. OE must be high only when WE and CE are both low.
Software Data
Protection Disable Algorithm
(1, 2, 3)
LOAD LAST BYTE
ANY ADDRESS
ADDRESS 2AAA
ADDRESS 2AAA
LAST ADDRESS
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA XX
LOAD DATA 55
LOAD DATA 80
LOAD DATA 55
LOAD DATA 20
TO
TO
TO
TO
TO
TO
TO
TO
(4)
EXIT DATA
PROTECT STATE
(1)
(3)