P89LPC92X1 NXP Semiconductors, P89LPC92X1 Datasheet - Page 12

• Manufacturer Part Number: P89LPC92X1
• Description: The P89LPC9201/9211/922A1/9241/9251 is a single-chip microcontroller, available in lowcost packages, based on a high performance processor architecture that executesinstructions in two to four clocks, six times the rate of standard 80C51 devices
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Functional description
P89LPC92X1
Product data sheet
7.1 Special function registers
Remark: Please refer to the P89LPC9201/9211/922A1/9241/9251 User manual for a
more detailed functional description.
Remark: SFR accesses are restricted in the following ways:
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•
•
User must not attempt to access any SFR locations not defined.
Accesses to any defined SFR locations must be strictly for the functions for the SFRs.
SFR bits labeled ‘-’, ‘0’ or ‘1’ can only be written and read as follows:
– ‘-’ Unless otherwise specified, must be written with ‘0’, but can return any value
– ‘0’ must be written with ‘0’, and will return a ‘0’ when read.
– ‘1’ must be written with ‘1’, and will return a ‘1’ when read.
when read (even if it was written with ‘0’). It is a reserved bit and may be used in
future derivatives.
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 1 December 2010
P89LPC9201/9211/922A1/9241/
8-bit microcontroller with 8-bit ADC
© NXP B.V. 2010. All rights reserved.
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