p89lpc972fn NXP Semiconductors, p89lpc972fn Datasheet - Page 13

• Manufacturer Part Number: p89lpc972fn
• Description: 8-bit Microcontroller With Accelerated Two-clock 80c51 Core 2kb/4 Kb/8 Kb Wide-voltage Byte-erasable ?ash
• Manufacturer: NXP Semiconductors

Table 4.
* indicates SFRs that are bit addressable.
Name
IP1*
IP1H
KBCON
KBMASK
KBPATN
P0*
P1*
P3*
P0M1
P0M2
P1M1
P1M2
P3M1
P3M2
PCON
Special function registers
Description
Interrupt
priority 1
Interrupt
priority 1 high
Keypad control
register
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
Bit address
Bit address
Bit address
Bit address
SFR addr. Bit functions and addresses
B0H
B1H
B2H
F8H
F7H
94H
86H
93H
80H
90H
84H
85H
91H
92H
87H
…continued
(P0M1.7)
(P0M2.7)
(P1M1.7)
(P1M2.7)
SMOD1
T1/KB7
T3EX
MSB
FF
B7
87
97
-
-
-
-
-
-
(P0M1.6)
(P0M2.6)
(P1M1.6)
(P1M2.6)
SMOD0
CMP1/
PSTH
PST
KB6
FE
B6
86
96
-
-
-
-
-
CMPREF/
(P0M1.5)
(P0M2.5)
KB5/T3
RST
FD
B5
85
95
-
-
-
-
-
-
-
-
-
(P0M1.4)
(P0M2.4)
(P1M1.4)
(P1M2.4)
PXTIMH
CIN1A/
PXTIM
INT1/
T4EX
KB4
BOI
FC
B4
84
94
-
-
-
-
(P0M1.3)
(P0M2.3)
(P1M1.3)
(P1M2.3)
SDA/T4
KB3/T2
CIN1B/
PSPIH
INT0/
PSPI
GF1
FB
B3
83
93
-
-
-
-
(P0M1.2)
(P0M2.2)
(P1M1.2)
(P1M2.2)
CIN2A/
T0/SCL
PCH
KB2
GF0
PC
B2
FA
82
92
-
-
-
-
(P0M1.1)
(P0M2.1)
(P1M1.1)
(P1M2.1)
(P3M1.1)
(P3M2.1)
PMOD1
CIN2B/
PKBIH
XTAL1
T2EX
PATN
_SEL
RXD/
PKBI
KB1
B1
F9
81
91
(P0M1.0) FF
(P0M2.0) 00
(P1M1.0) D3
(P1M2.0) 00
(P3M1.0) 03
(P3M2.0) 00
PMOD0
CMP2/
PI2CH
XTAL2
PI2C
KBIF
LSB
TXD
KB0
B0
F8
80
90
Reset value
Hex
00
00
00
00
FF
[1]
[1]
[1]
00
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[1]
[1]
Binary
00x0 0000
00x0 0000
xxxx xx00
0000 0000
1111 1111
1111 1111
0000 0000
11x1 xx11
00x0 xx00
xxxx xx11
xxxx xx00
0000 0000