p89lpc932ba NXP Semiconductors, p89lpc932ba Datasheet - Page 16

• Manufacturer Part Number: p89lpc932ba
• Description: P89lpc932 8-bit Microcontroller With Accelerated Two-clock 80c51 Core 8 Kb Flash With 512-byte Data Eeprom And 768-byte Ram
• Manufacturer: NXP Semiconductors

Table 4:
* indicates SFRs that are bit addressable.
[1]
[2]
[3]
[4]
[5]
[6]
Name
TH0
TH1
TH2
TICR2
TIFR2
TISE2
TL0
TL1
TL2
TMOD
TOR2H
TOR2L
TPCR2H
TPCR2L
TRIM
WDCON
WDL
WFEED1
WFEED2
All ports are in input only (high impedance) state after power-up.
BRGR1 and BRGR0 must only be written if BRGEN in BRGCON SFR is ‘0’. If any are written while BRGEN = 1, the result is unpredictable.
The RSTSRC register reflects the cause of the P89LPC932 reset. Upon a power-up reset, all reset source flags are cleared except POF and BOF; the power-on reset value is
xx110000.
After reset, the value is 111001x1, i.e., PRE2-PRE0 are all ‘1’, WDRUN = 1 and WDCLK = 1. WDTOF bit is ‘1’ after watchdog reset and is ‘0’ after power-on reset. Other resets will
not affect WDTOF.
On power-on reset, the TRIM SFR is initialized with a factory preprogrammed value. Other resets will not cause initialization of the TRIM register.
The only reset source that affects these SFRs is power-on reset.
Special function registers
Description
Timer 0 HIGH
Timer 1 HIGH
CCU timer HIGH
CCU interrupt control register
CCU interrupt flag register
CCU interrupt status encode
register
Timer 0 LOW
Timer 1 LOW
CCU timer LOW
Timer 0 and 1 mode
CCU reload register HIGH
CCU reload register LOW
Prescaler control register
HIGH
Prescaler control register
LOW
Internal oscillator trim register
Watchdog control register
Watchdog load
Watchdog feed 1
Watchdog feed 2
…continued
SFR
addr.
CDH
DEH
CCH
CEH
CBH
CAH TPCR2L.
8CH
8DH
C9H
E9H
8AH
8BH
CFH
A7H
C1H
C2H
C3H
89H
96H
Bit functions and addresses
T1GATE
TOIE2
TOIF2
PRE2
MSB
7
-
-
-
TOCIE2D TOCIE2C TOCIE2B TOCIE2A
TPCR2L.
TOCF2D TOCF2C TOCF2B
ENCLK
T1C/T
PRE1
6
-
-
TPCR2L.
TRIM.5
PRE0
T1M1
5
-
-
TPCR2L.
TRIM.4
T1M0
4
-
-
-
TPCR2L.
TOCF2A
T0GATE
TRIM.3
3
-
-
-
TPCR2L.
ENCINT.
WDRUN
TRIM.2
T0C/T
2
2
-
-
-
TPCR2H.
TPCR2L.
ENCINT.
TICIE2B
WDTOF
TICF2B
TRIM.1
T0M1
1
1
1
TPCR2H.
TPCR2L.
ENCINT.
TICIE2A 00
TICF2A
WDCLK
TRIM.0
T0M0
LSB
0
0
0
Reset value
Hex
00
00
00
00
00
00
00
00
00
00
00
00
00
FF
[5] [6]
[4] [6]
Binary
00000000
00000000
00000000
00000x00
00000x00
xxxxx000
00000000
00000000
00000000
00000000
00000000
00000000
xxxxxx00
00000000
11111111