P89LPC901 PHILIPS [NXP Semiconductors], P89LPC901 Datasheet - Page 16

• Manufacturer Part Number: P89LPC901
• Description: 8-bit microcontrollers with two-clock 80C51 core 1 kB 3 V Flash with 128-byte RAM
• Manufacturer: PHILIPS [NXP Semiconductors]

Table 7:
* indicates SFRs that are bit addressable.
Name
KBMASK
KBPATN
P0*
P1*
P3*
P0M1
P0M2
P1M1
P1M2
P3M1
P3M2
PCON
PCONA
PCONB
PSW*
PT0AD
RSTSRC
RTCCON
RTCH
RTCL
SP
TAMOD
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P89LPC901 Special function registers
Description
Keypad interrupt mask
register
Keypad pattern register
Port 0
Port 1
Port 3
Port 0 output mode 1
Port 0 output mode 2
Port 1 output mode 1
Port 1 output mode 2
Port 3 output mode 1
Port 3 output mode 2
Power control register
Power control register A
reserved for Power Control
Register B
Program status word
Port 0 digital input disable
Reset source register
Real-time clock control
Real-time clock register HIGH D2H
Real-time clock register LOW
Stack pointer
Timer 0 auxiliary mode
Bit address
Bit address
Bit address
Bit address
SFR
addr.
B0H
B1H
B2H
B5H
B6H
D0H
DFH
D1H
D3H
86H
93H
80H
90H
84H
85H
91H
92H
87H
F6H
81H
8FH
…continued
RTCPD
RTCF
MSB
CY
B7
D7
87
97
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RTCS1
B6
D6
AC
86
96
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CMPREF
(P0M1.5) (P0M1.4)
(P0M2.5) (P0M2.4)
(P1M1.5)
(P1M2.5)
PT0AD.5 PT0AD.4
RTCS0
BOPD
VCPD
/KB5
BOF
RST
B5
D5
F0
85
95
-
-
-
-
-
Bit functions and addresses
CIN1A
/KB4
RS1
POF
BOI
B4
D4
84
94
-
-
-
-
-
-
-
-
-
GF1
RS0
B3
D3
83
93
-
-
-
-
-
-
-
-
-
-
-
-
-
-
(P1M1.2)
(P1M2.2)
R_WD
GF0
OV
T0
B2
D2
82
92
-
-
-
-
-
-
-
-
-
-
-
(P3M1.1) (P3M1.0) 03
(P3M2.1) (P3M2.0) 00
PMOD1
XTAL1
ERTC
R_SF
B1
D1
81
91
F1
-
-
-
-
-
-
-
-
-
-
PMOD0
RTCEN
XTAL2
R_EX
T0M2
LSB
B0
D0
80
90
P
-
-
-
-
-
-
-
-
Reset value
Hex
00
FF
[1]
[1]
[1]
FF
00
FF
00
00
00
00
00
00
[3]
60
[6]
00
00
07
00
[1]
[1]
[1]
[1]
[1]
[1]
[6]
[6]
[1]
Binary
00000000
11111111
11111111
00000000
11111111
00000000
xxxxxx11
xxxxxx00
00000000
00000000
xxxxxxxx
00000000
xx00000x
011xxx00
00000000
00000000
00000111
xxx0xxx0