P89V51RC2FN NXP Semiconductors, P89V51RC2FN Datasheet - Page 19
P89V51RC2FN
Manufacturer Part Number
P89V51RC2FN
Description
IC, MCU 8BIT 80C51 32K FLASH, DIP40
Manufacturer
NXP Semiconductors
Datasheet
1.P89V51RC2FBC557.pdf
(80 pages)
Specifications of P89V51RC2FN
Controller Family/series
(8051) 8052
Core Size
8bit
No. Of I/o's
32
Program Memory Size
32KB
Ram Memory Size
1KB
Cpu Speed
33MHz
Oscillator Type
External Only
No. Of Timers
4
No. Of Pwm
RoHS Compliant
Package
40PDIP
Device Core
80C51
Family Name
89V
Maximum Speed
40 MHz
Ram Size
1 KB
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Program Memory Type
Flash
Number Of Programmable I/os
32
Interface Type
SPI/UART
Operating Temperature
-40 to 85 °C
Number Of Timers
3
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P89V51RC2FN
Manufacturer:
ST
Quantity:
9 576
NXP Semiconductors
P89V51RB2_RC2_RD2_5
Product data sheet
6.2.8 Dual data pointers
The device has two 16-bit data pointers. The DPTR Select (DPS) bit in AUXR1
determines which of the two data pointers is accessed. When DPS = 0, DPTR0 is
selected; when DPS = 1, DPTR1 is selected. Quickly switching between the two data
pointers can be accomplished by a single INC instruction on AUXR1 (see
Fig 6. Internal and external data memory structure
2FFH
000H
2FFH
000H
EXPANDED RAM
ADDRESSING)
EXPANDED
(INDIRECT
768 B
Rev. 05 — 12 November 2009
RAM
FFFFH
0300H
FFH
7FH
80H
00H
INTERNAL RAM
INTERNAL RAM
(INDIRECT AND
ADDRESSING)
ADDRESSING)
ADDRESSING)
LOWER 128 B
UPPER 128 B
EXTRAM = 0
EXTERNAL
P89V51RB2/RC2/RD2
(INDIRECT
(INDIRECT
MEMORY
DIRECT
DATA
8-bit microcontrollers with 80C51 core
FFFFH
0000H
FFH
80H
REGISTERS (SFRs)
ADDRESSING)
ADDRESSING)
EXTERNAL
FUNCTION
(INDIRECT
EXTRAM = 1
MEMORY
SPECIAL
(DIRECT
DATA
© NXP B.V. 2009. All rights reserved.
Figure
002aaa517
7).
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