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P89LPC9331_9341_9351_9361 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 5.1 — 20 August 2012 18 of 94
NXP Semiconductors
P89LPC9331/9341/9351/9361
8-bit microcontroller with accelerated two-clock 80C51 core
SBUF Serial Port data
buffer register
99H xx xxxx xxxx
Bit address 9F 9E 9D 9C 9B 9A 99 98
SCON* Serial port
control
98H SM0/FE SM1 SM2 REN TB8 RB8 TI RI 00 0000 0000
SSTAT Serial port
extended
status register
BAH DBMOD INTLO CIDIS DBISEL FE BR OE STINT 00 0000 0000
SP Stack pointer 81H 07 0000 0111
SPCTL SPI control
register
E2H SSIG SPEN DORD MSTR CPOL CPHA SPR1 SPR0 04 0000 0100
SPSTAT SPI status
register
E1HSPIFWCOL------0000xxxxxx
SPDAT SPI data
register
E3H 00 0000 0000
TAMOD Timer 0 and 1
auxiliary mode
8FH - - - T1M2 - - - T0M2 00 xxx0 xxx0
Bit address 8F 8E 8D 8C 8B 8A 89 88
TCON* Timer 0 and 1
control
88H TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 00 0000 0000
TH0 Timer 0 high 8CH 00 0000 0000
TH1 Timer 1 high 8DH 00 0000 0000
TL0 Timer 0 low 8AH 00 0000 0000
TL1 Timer 1 low 8BH 00 0000 0000
TMOD Timer 0 and 1
mode
89H T1GATE T1C/T T1M1 T1M0 T0GATE T0C/T T0M1 T0M0 00 0000 0000
TRIM Internal
oscillator trim
register
96H RCCLK ENCLK TRIM.5 TRIM.4 TRIM.3 TRIM.2 TRIM.1 TRIM.0
[5][6]
WDCON Watchdog
control register
A7H PRE2 PRE1 PRE0 - - WDRUN WDTOF WDCLK
[4][6]
Table 4. Special function registers - P89LPC9331/9341 …continued
* indicates SFRs that are bit addressable.
Name Description SFR
addr.
Bit functions and addresses Reset value
MSB LSB Hex Binary
