P80C31SBPN NXP Semiconductors, P80C31SBPN Datasheet - Page 12

• Manufacturer Part Number: P80C31SBPN
• Description: MCU 8-Bit 80C 80C51 CISC ROMLess 3.3V/5V 40-Pin PDIP Tube
• Manufacturer: NXP Semiconductors

Specifications of P80C31SBPN

• Package: 40PDIP
• Device Core: 80C51
• Family Name: 80C
• 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: 128 Byte
• Program Memory Type: ROMLess
• Operating Temperature: 0 to 70 °C
• Controller Family/series: 80C51
• No. Of I/o's: 32
• Ram Memory Size: 128Byte
• Cpu Speed: 16MHz
• No. Of Timers: 3
• Digital Ic Case Style: DIP
• Supply Voltage Range: 2.7V To 5.5V
• Core Size: 8 Bit
• Embedded Interface Type: UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Philips Semiconductors
2000 Aug 07
80C51 8-bit microcontroller family
128/256 byte RAM ROMless low voltage (2.7V–5.5V),
low power, high speed (33 MHz)
OSC
OSC
T2EX Pin
T2 Pin
T2 PIN
12
2
Transition
Detector
NOTE: OSC. Freq. is divided by 2, not 12.
C/T2 = 0
C/T2 = 1
C/T2 = 0
C/T2 = 1
Note availability of additional external interrupt.
EXEN2
TR2
Control
Figure 5. Timer 2 Auto Reload Mode (DCEN = 1)
Figure 6. Timer 2 in Baud Rate Generator Mode
CONTROL
TR2
Control
(DOWN COUNTING RELOAD VALUE)
EXF2
(UP COUNTING RELOAD VALUE)
RCAP2L
FFH
TL2
RCAP2L
(8-bits)
Interrupt
12
Timer 2
TL2
RCAP2H
FFH
TH2
(8-bits)
RCAP2H
TH2
OVERFLOW
Reload
T2EX PIN
“1”
“1”
2
COUNT
DIRECTION
1 = UP
0 = DOWN
“0”
“0”
“0”
Overflow
Timer 1
TOGGLE
80C31/80C32
TF2
“1”
Product specification
16
16
EXF2
SMOD
RCLK
TCLK
INTERRUPT
SU00068
SU00730
RX Clock
TX Clock