HN27C4000G Renesas Electronics Corporation., HN27C4000G Datasheet - Page 9

• Manufacturer Part Number: HN27C4000G
• Description: 524288-word 8-bit/262144-word X 16-bit Cmos Uv Erasable And Programmable Rom - Hitachi Semiconductor
• Manufacturer: Renesas Electronics Corporation.

Fast High-Reliability Page
Programming
This device can be applied the high performance
page programming algorithm shown in the
following flowchart. This algorithm allows to
obtain faster programming time without any
voltage stress to the device nor deterioration in
reliability of programmed data.
Address + 1
Address
Fast High-Reliability Page Programming Flowchart
V
V
PP
PP
SET PAGE PROG./VERIFY MODE
SET PAGE PROG LATCH MODE
= 12.5 ± 0.3 V V
= 12.5 ± 0.3 V V
V
NO
Program t
CC
Address + 1
Address + 1
Address + 1
= 5.0 ± 0.5 V V
OE
SET READ MODE
Address = 0
= 12.0 ± 0.5 V
all address
n + 1 n
address?
VERIFY
START
PW
READ
Latch
Latch
Latch
Latch
LAST
n = 0
END
CC
= 50 s ± 5%
CC
GO
GO
YES
Address
Address
Address
= 6.25 ± 0.25 V
= 6.25 ± 0.25 V
Page Program Set
Apply 12 V to
to set a page program mode.
The device operates in a page program mode until
reset.
Page Program Reset
Set V
program mode.
PP
= V
NOGO
CC
NOGO
PP
to V
OE
CC
pin after applying 12.5 V to V
level or less to reset a page
HN27C4000G Series
n = 10?
FAIL
YES
NO
PP
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