P89LPC938 NXP Semiconductors, P89LPC938 Datasheet - Page 15

• Manufacturer Part Number: P89LPC938
• Description: The P89LPC938 is a single-chip microcontroller, available in low cost packages, based ona high performance processor architecture that executes instructions in two to four clocks,six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

Table 4:
* indicates SFRs that are bit addressable.
Name
P1*
P2*
P3*
P0M1
P0M2
P1M1
P1M2
P2M1
P2M2
P3M1
P3M2
PCON
PCONA
PSW*
PT0AD
RSTSRC
RTCCON
RTCH
RTCL
SADDR
SADEN
SBUF
SCON*
SSTAT
P89LPC938 Special function registers
Description
Port 1
Port 2
Port 3
Port 0 output mode 1
Port 0 output mode 2
Port 1 output mode 1
Port 1 output mode 2
Port 2 output mode 1
Port 2 output mode 2
Port 3 output mode 1
Port 3 output mode 2
Power control register
Power control register A
Program status word
Port 0 digital input disable
Reset source register
RTC control
RTC register high
RTC register low
Serial port address register
Serial port address enable
Serial Port data buffer register
Serial port control
Serial port extended status
register
Bit address
Bit address
Bit address
Bit address
SFR
addr.
A0H
B0H
A4H
A5H
B1H
B2H
B5H
D0H
DFH
D1H
D2H
D3H
A9H
B9H
BAH
90H
84H
85H
91H
92H
87H
F6H
99H
98H
Bit functions and addresses
(P0M1.7) (P0M1.6) (P0M1.5) (P0M1.4) (P0M1.3) (P0M1.2) (P0M1.1) (P0M1.0) FF
(P0M2.7) (P0M2.6) (P0M2.5) (P0M2.4) (P0M2.3) (P0M2.2) (P0M2.1) (P0M2.0) 00
(P1M1.7) (P1M1.6)
(P1M2.7) (P1M2.6)
(P2M1.7) (P2M1.6) (P2M1.5) (P2M1.4) (P2M1.3) (P2M1.2) (P2M1.1) (P2M1.0) FF
(P2M2.7) (P2M2.6) (P2M2.5) (P2M2.4) (P2M2.3) (P2M2.2) (P2M2.1) (P2M2.0) 00
DBMOD
SMOD1
SM0/FE
RTCPD
…continued
RTCF
MSB
OCC
ICA
CY
B7
D7
9F
97
-
-
-
-
-
SMOD0
DEEPD
RTCS1
INTLO
OCB
OCA
SM1
AC
B6
D6
9E
96
-
-
-
-
-
PT0AD.5 PT0AD.4 PT0AD.3 PT0AD.2 PT0AD.1
SPICLK
RTCS0
BOPD
VCPD
CIDIS
BOF
SM2
RST
B5
D5
F0
9D
95
-
-
-
-
-
(P1M1.4) (P1M1.3) (P1M1.2) (P1M1.1) (P1M1.0) D3
(P1M2.4) (P1M2.3) (P1M2.2) (P1M2.1) (P1M2.0) 00
DBISEL
ADPD
INT1
POF
REN
RS1
BOI
SS
B4
D4
9C
94
-
-
-
-
R_BK
INT0/
MISO
I2PD
SDA
GF1
RS0
TB8
B3
D3
9B
FE
93
-
-
-
-
T0/SCL
R_WD
SPPD
MOSI
GF0
RB8
OV
BR
B2
D2
9A
92
-
-
-
-
(P3M1.1) (P3M1.0) 03
(P3M2.1) (P3M2.0) 00
PMOD1
XTAL1
R_SF
ERTC
OCD
RXD
SPD
OE
B1
D1
F1
91
99
TI
PMOD0 00
CCUPD 00
RTCEN
XTAL2
STINT
R_EX
LSB
TXD
ICB
B0
D0
90
98
RI
P
-
Reset value
Hex
00
00
60
00
00
00
00
xx
00
00
[2]
[2]
[2]
[2]
[2]
[2]
[2] [4]
[4]
[4]
[2]
[2]
[2]
Binary
11111111
00000000
11x1xx11
00x0xx00
11111111
00000000
xxxxxx11
xxxxxx00
00000000
00000000
00000000
xx00000x
011xxx00
00000000
00000000
00000000
00000000
xxxxxxxx
00000000
00000000
[2]
[2]
[2]
[3]