P89V51RB2FN NXP Semiconductors, P89V51RB2FN Datasheet - Page 10

• Manufacturer Part Number: P89V51RB2FN
• Description: IC, MCU 8BIT 80C51 16K FLASH, DIP40
• Manufacturer: NXP Semiconductors

Specifications of P89V51RB2FN

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 32
• Program Memory Size: 16KB
• Ram Memory Size: 1KB
• Cpu Speed: 33MHz
• Oscillator Type: External Only
• No. Of Timers: 4
• No. Of Pwm: RoHS Compliant

NXP Semiconductors
6. Functional description
P89V51RB2_RC2_RD2_5
Product data sheet
6.1 Special function registers
Remark: SFR accesses are restricted in the following ways:
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•
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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.
Rev. 05 — 12 November 2009
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
© NXP B.V. 2009. All rights reserved.
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