P87C51RB+4A NXP Semiconductors, P87C51RB+4A Datasheet - Page 16
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P87C51RB+4A
Manufacturer Part Number
P87C51RB+4A
Description
MCU 8-Bit 87C 80C51 CISC 16KB EPROM 3.3V/5V 44-Pin PLCC Tube
Manufacturer
NXP Semiconductors
Datasheet
1.P87C54SBAA512.pdf
(56 pages)
Specifications of P87C51RB+4A
Package
44PLCC
Device Core
80C51
Family Name
87C
Maximum Speed
16 MHz
Operating Supply Voltage
3.3|5 V
Data Bus Width
8 Bit
Number Of Programmable I/os
32
Interface Type
UART
Number Of Timers
3
Ram Size
512 Byte
Program Memory Size
16 KB
Program Memory Type
EPROM
Operating Temperature
0 to 70 °C
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
P87C51RB+4AP87C51RB 4AЈ¬512
Manufacturer:
NXP
Quantity:
61
Philips Semiconductors
2000 Aug 07
80C51 8-bit microcontroller family
8K–64K/256–1K OTP/ROM/ROMless, low voltage (2.7V–5.5V),
low power, high speed (33MHz)
T2EX PIN
OSC
T2 PIN
OSC
T2 PIN
12
TRANSITION
DETECTOR
12
C/T2 = 0
C/T2 = 1
C/T2 = 0
C/T2 = 1
EXEN2
TR2
Figure 4. Timer 2 in Auto-Reload Mode (DCEN = 0)
CONTROL
Figure 5. Timer 2 Auto Reload Mode (DCEN = 1)
CONTROL
TR2
(DOWN COUNTING RELOAD VALUE)
CONTROL
(UP COUNTING RELOAD VALUE)
RELOAD
RCAP2L
FFH
TL2
16
(8-BITS)
RCAP2L
RCAP2H
TL2
FFH
TH2
(8-BITS)
OVERFLOW
RCAP2H
TH2
8XC51RA+/RB+/RC+/RD+/80C51RA+
T2EX PIN
8XC51FA/FB/FC/80C51FA
EXF2
TF2
COUNT
DIRECTION
1 = UP
0 = DOWN
TOGGLE
TF2
Product specification
EXF2
INTERRUPT
8XC54/58
INTERRUPT
SU00730
TIMER 2
SU00067