P89V51RD2FBC NXP Semiconductors, P89V51RD2FBC Datasheet - Page 61

• Manufacturer Part Number: P89V51RD2FBC
• Description: MCU 8-Bit 89V 80C51 CISC 64KB Flash 5V 44-Pin TQFP Tray
• Manufacturer: NXP Semiconductors

Specifications of P89V51RD2FBC

• Package: 44TQFP
• 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 Size: 64 KB
• Program Memory Type: Flash
• Operating Temperature: -40 to 85 °C

NXP Semiconductors
P89V51RB2_RC2_RD2_5
Product data sheet
Table 58.
Table 59.
Not Bit addressable; Reset value: xxxx x0xxB
Table 60.
Device
P89V51RD2
Bit
7
6
5 to 4
3
2 to 0
Bit
Symbol
Fig 29. Oscillator characteristics (external clock drive)
Clock doubling features
FST - Flash status register (address B6) bit allocation
FST - Flash status register (address B6) bit description
Symbol
-
SB
-
EDC
-
7
-
Standard mode (X1)
Clocks per
machine cycle
12
Rev. 05 — 12 November 2009
SB
6
Description
Reserved for future use. Should be set to ‘0’ by user programs.
Security bit.
Reserved for future use. Should be set to ‘0’ by user programs.
Enable double clock.
Reserved for future use. Should be set to ‘0’ by user programs.
5
-
oscillator
external
signal
Max. external
clock frequency
(MHz)
40
n.c.
4
-
P89V51RB2/RC2/RD2
8-bit microcontrollers with 80C51 core
002aaa546
XTAL2
XTAL1
V
SS
EDC
3
Clock double mode (X2)
Clocks per
machine cycle
6
2
-
© NXP B.V. 2009. All rights reserved.
Max. external
clock frequency
(MHz)
20
1
-
61 of 80
0
-