P89V51RD2FA NXP Semiconductors, P89V51RD2FA Datasheet - Page 19
P89V51RD2FA
Manufacturer Part Number
P89V51RD2FA
Description
MCU 8-Bit 89V 80C51 CISC 64KB Flash 5V 44-Pin PLCC Tube
Manufacturer
NXP Semiconductors
Datasheet
1.P89V51RD2FA.pdf
(80 pages)
Specifications of P89V51RD2FA
Program Memory Size
64 KB
Package
44PLCC
Device Core
80C51
Family Name
89V
Maximum Speed
40 MHz
Operating Supply Voltage
5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
32
Interface Type
SPI/UART
Number Of Timers
3
Ram Size
1 KB
Program Memory Type
Flash
Operating Temperature
-40 to 85 °C
Controller Family/series
80C51
No. Of I/o's
32
Ram Memory Size
1KB
Cpu Speed
40MHz
No. Of Timers
4
No. Of Pwm Channels
5
Digital Ic Case Style
LCC
Core Size
8 Bit
Embedded Interface Type
UART
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P89V51RD2FA
Manufacturer:
BI
Quantity:
230
Part Number:
P89V51RD2FA
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
P89V51RD2FA,512
Manufacturer:
Freescale
Quantity:
312
Company:
Part Number:
P89V51RD2FA,512
Manufacturer:
NXP Semiconductors
Quantity:
10 000
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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