P87C51RC+4N,112 NXP Semiconductors, P87C51RC+4N,112 Datasheet - Page 29

• 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)
Figure 14. UART Multiprocessor Communication, Automatic Address Recognition
START
BIT
IN UART MODE 2 OR MODE 3 AND SM2 = 1:
– WHEN OWN ADDRESS RECEIVED, CLEAR SM2 TO RECEIVE DATA BYTES
– WHEN ALL DATA BYTES HAVE BEEN RECEIVED: SET SM2 TO WAIT FOR NEXT ADDRESS.
D0
SM0 / FE
INTERRUPT IF REN=1, RB8=1 AND “RECEIVED ADDRESS” = “PROGRAMMED ADDRESS”
RECEIVED ADDRESS D0 TO D7
SMOD1
PROGRAMMED ADDRESS
D0
0 : SCON.7 = SM0
1 : SCON.7 = FE
D1
SMOD0
8KB/16KB/32KB/64KB OTP
SM1
D1
Figure 13. UART Framing Error Detection
D2
SM2
SM0
D2
–
1
1
D3
REN
SM1
D3
POF
DATA BYTE
1
0
SET FE BIT IF STOP BIT IS 0 (FRAMING ERROR)
SM0 TO UART MODE CONTROL
D4
29
TB8
D4
SM2
LVF
COMPARATOR
D5
1
D5
RB8
GF0
REN
1
D6
D6
P87C51RA2/RB2/RC2/RD2
GF1
TB8
TI
D7
X
D7
RB8
IDL
D8
RI
MODE 2, 3
ONLY IN
D8
SCON
(98H)
PCON
(87H)
TI
STOP
BIT
SU00044
RI
SU00045
SCON
(98H)
Product data