P87C51RC+4N,112 NXP Semiconductors, P87C51RC+4N,112 Datasheet - Page 31

• Manufacturer Part Number: P87C51RC+4N,112
• Description: IC 80C51 MCU 512 RAM 44-DIP
• Manufacturer: NXP Semiconductors
• Series: 87Cr

Specifications of P87C51RC+4N,112

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• For Use With: OM10064 - EMULATOR 80C51 PDS51-MK2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Other names: 935253430112; P87C51RC+4N; P87C51RC+4N

Philips Semiconductors
2003 Jan 24
80C51 8-bit microcontroller family
with 512B/1KB RAM, low voltage (2.7 to 5.5 V), low power, high
speed (30/33 MHz)
BIT
IP.7
IP.6
IP.5
IP.4
IP.3
IP.2
IP.1
IP.0
BIT
IPH.7
IPH.6
IPH.5
IPH.4
IPH.3
IPH.2
IPH.1
IPH.0
IPH (B7H)
IP (0B8H)
SYMBOL
–
PPC
PT2
PS
PT1
PX1
PT0
PX0
SYMBOL
–
PPCH
PT2H
PSH
PT1H
PX1H
PT0H
PX0H
Priority Bit = 1 assigns high priority
Priority Bit = 0 assigns low priority
Priority Bit = 1 assigns higher priority
Priority Bit = 0 assigns lower priority
FUNCTION
–
PCA interrupt priority bit
Timer 2 interrupt priority bit.
Serial Port interrupt priority bit.
Timer 1 interrupt priority bit.
External interrupt 1 priority bit.
Timer 0 interrupt priority bit.
External interrupt 0 priority bit.
FUNCTION
–
PCA interrupt priority bit
Timer 2 interrupt priority bit high.
Serial Port interrupt priority bit high.
Timer 1 interrupt priority bit high.
External interrupt 1 priority bit high.
Timer 0 interrupt priority bit high.
External interrupt 0 priority bit high.
7
–
7
–
PPCH
PPC
8KB/16KB/32KB/64KB OTP
6
6
PT2H
PT2
5
5
Figure 17. IPH Registers
Figure 16. IP Registers
PSH
PS
4
4
31
PT1H
PT1
3
3
PX1H
PX1
2
2
P87C51RA2/RB2/RC2/RD2
PT0H
PT0
1
1
PX0H
PX0
SU01291
0
0
SU01292
Product data