SN8P2977
8-Bit Micro-Controller with Regulator, PGIA, 24-bit ADC
SONiX TECHNOLOGY CO., LTD
Page 102
Version 1.7
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IN SYSTEM PROGRAM ROM
12.1 OVERVIEW
In-System-Program ROM (ISP ROM), provided user an easy way to storage data into Read-Only-Memory. Choice any
ROM address and executing ROM programming instruction
– ROMWRT and supply 7.5V voltage on VPP/VLCD pin,
after programming time always 200us,ROMDAH/ROMDAL data will be programmed into address ROMADRH / L
12.2 ROMADRH/ROMADRL REGISTER
0A0H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ROMADRH
ROMADR15
-
-
-
ROMADR11 ROMADR10 ROMADR9 ROMADR8
Read/Write
R/W
-
-
-
R/W
R/W
R/W
R/W
After reset
0
-
-
-
0
0
0
0
0A1H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ROMADRL
ROMADR7 ROMADR6 ROMADR5 ROMADR4 ROMADR3 ROMADR2 ROMADR1 ROMADR0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
After reset
0
0
0
0
0
0
0
0
ROMADR[15] :
ISP ROM Programming
selection control bit.
(Always set “0”)
0: User ROM.
1: Information ROM.
ROMADR[11:0] :
ISP ROM Programming Address.
ROM Address which will be Programmed
12.3 ROMDAH/ROMADL REGISTERS
0A2H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ROMDAH
ROMDA15
ROMDA14
ROMDA13 ROMDA12 ROMDA11 ROMDA10
ROMDA9
ROMDA8
Read/Write
W
W
W
W
W
W
W
W
After reset
0
0
0
0
0
0
0
0
0A3H
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
ROMDAL
ROMDA7
ROMDA6
ROMDA5
ROMDA4
ROMDA3
ROMDA2
ROMDA1
ROMDA0
Read/Write
W
W
W
W
W
W
W
W
After reset
0
0
0
0
0
0
0
0
ROMDA[15:0] :
ISP ROM Programming Data
ROM Data which want to Programming into ROM area..
