P89V51RB2FA NXP Semiconductors, P89V51RB2FA Datasheet - Page 61

• Manufacturer Part Number: P89V51RB2FA
• Description: MCU 8BIT 80C51 16K FLASH, PLCC44
• Manufacturer: NXP Semiconductors

Specifications of P89V51RB2FA

• Controller Family/series: (8051) 8052
• Core Size: 8bit
• No. Of I/o's: 32
• Program Memory Size: 16KB
• Ram Memory Size: 1KB
• Cpu Speed: 40MHz
• Oscillator Type: External Only
• No. Of Timers: 4
• No. Of Pwm: RoHS Compliant

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
-