GMS36 Datasheet, PDF(105/109 Page) Hynix Semiconductor

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GMS36 Datasheet, PDF (105/109 Pages) Hynix Semiconductor – 4-BIT SINGLE CHIP MICROCOMPUTERS

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Chapter 9. EPROM

3) Lock Bit Write Mode

26&

9''

%ORFN

9''+

.933

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[ 73

.a.

'a'

%ORFN

79336

79335

9,+3

7.6

7.'

9''+

702'(

5HVHW

/RFN :ULWH 0RGH VHWWLQJ

:DLW F\ FOH

26&

9''

.933

.a.

%ORFN

9''+

9,+3

9''+

%ORFN

7'/<

'a'

:DLW F\ FOH

WLPHV UHSHDW

XV [ XV

0+ +LJK ELW 0RGH ,QSXW /DWFK

0/ /RZ ELW 0RGH ,QSXW /DWFK

#. Note :

1. Internal system is reset at VPP = 12.5V and K2=`Low`

2. OSC1 is made of a block of 8 x Tp clock.

3. From this time when the reset is released (K2=`High`) , OSC1 clock is counted by 1-bolck.

4. If not written during 10 times repeats(120us), repeat the 5 times until all is written.

9-12

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