SN8F2250B Datasheet, PDF (117/133 Pages) SONiX Technology Company – 8-Bit Micro-Controller

SN8F2250B Series
USB 2.0 Full-Speed 8-Bit Micro-Controller
11.4 PROGRAMMING/ERASE DATA REGISTER
0BDH
PERAML
Read/Write
After reset
Bit 7
PERAML7
R/W
0
Bit 6
PERAML6
R/W
0
Bit 5
PERAML5
R/W
0
Bit 4
PERAML4
R/W
0
Bit 3
PERAML3
R/W
0
Bit 2
PERAML2
R/W
0
Bit 1
PERAML1
R/W
0
Bit 0
PERAML0
R/W
0
0BEH
PERAMCNT
Read/Write
After reset
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
PERAMCNT4 PERAMCNT3 PERAMCNT2 PERAMCNT1 PERAMCNT0
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
Bit 2
-
-
-
Bit 1
-
-
-
Bit 0
PERAML8
R/W
0
{PERAMCNT [1:0], PERAML [7:0]}: Define the starting RAM address [9:0], which stores the data wanted to be
programmed. The valid RAM addresses are 00H ~ 07FH and 0100H ~ 01FFH.
PERAMCNT [7:3]: Defines the number of words wanted to be programmed. The maximum PERAMCNT [7:3] is 01FH,
which program 32 words (64 bytes RAM) to the Flash. The minimum PERAMCNT [7:3] is 00H, which program only 1
word to the Flash.
11.4.1 Flash In-system-programming mapping address
X
X+1
X+2
X+3
…
X+N
RAM (byte)
bit7 ~ bit0
DATA0
DATA1
DATA2
DATA3
DATAN
=>
Y
Y+1
Y+2
Y+3
…
Y+M
Flash ROM (word)
bit15 ~ bit8
bit7 ~ bit0
DATA1
DATA0
DATA3
DATA2
DATAN
DATAN-1
SONiX TECHNOLOGY CO., LTD
Page 117
Version 1.1