P89LPC9408 Datasheet, PDF (12/69 Pages) NXP Semiconductors – 8-bit microcontroller with two-clock 80C51 core 8 kB 3 V byte-erasable flash, 32 segment x 4 LCD driver, 10-bit ADC

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Table 4: Special function registers …continued
* indicates SFRs that are bit addressable.
Name
Description
SFR Bit functions and addresses
addr. _MSB
LSB
Reset value
Hex Binary
DEEDAT Data EEPROM data F2H
register
00
0000 0000
DEEADR Data EEPROM
F3H
address register
00
0000 0000
DIVM
CPU clock
95H
divide-by-M control
00
0000 0000
DPTR
Data pointer
(2 bytes)
DPH Data pointer high 83H
00
0000 0000
DPL
Data pointer low
82H
00
0000 0000
FMADRH Program flash
E7H
address high
00
0000 0000
FMADRL Program flash
E6H
address low
00
0000 0000
FMCON Program flash
E4H BUSY
-
-
-
HVA
HVE
SV
OI 70
0111 0000
control (Read)
Program flash
control (Write)
E4H FMCMD.7 FMCMD.6 FMCMD.5 FMCMD.4 FMCMD.3 FMCMD.2 FMCMD.1 FMCMD.0
FMDATA Program flash data E5H
00
0000 0000
I2ADR
I²C slave address
register
DBH I2ADR.6 I2ADR.5 I2ADR.4 I2ADR.3 I2ADR.2 I2ADR.1 I2ADR.0
GC 00
0000 0000
Bit address DF
DE
DD
DC
DB
DA
D9
D8
I2CON* I²C control register D8H
-
I2EN
STA
STO
SI
AA
-
CRSEL 00
x000 00x0
I2DAT
I²C data register
DAH
I2SCLH
Serial clock
DDH
generator/SCL duty
cycle register high
00
0000 0000
I2SCLL
Serial clock
DCH
generator/SCL duty
cycle register low
00
0000 0000
I2STAT
I²C status register D9H STA.4
STA.3
STA.2
STA.1
STA.0
0
0
0
F8
1111 1000
ICRAH
Input capture A
register high
ABH
00
0000 0000