P80C32UBAA,512 NXP Semiconductors, P80C32UBAA,512 Datasheet - Page 10

• Manufacturer Part Number: P80C32UBAA,512
• Description: IC 80C51 MCU 8BIT ROMLESS 44PLCC
• Manufacturer: NXP Semiconductors
• Series: 80Cr

Specifications of P80C32UBAA,512

• Program Memory Type: ROMless
• Package / Case: 44-PLCC
• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 33MHz
• Connectivity: UART/USART
• Peripherals: POR
• Number Of I /o: 32
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Processor Series: P80C3x
• Core: 80C51
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Interface Type: UART
• Maximum Clock Frequency: 33 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: PK51, CA51, A51, ULINK2
• Minimum Operating Temperature: 0 C
• Program Memory Size: 32 KB
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-1234-5; 935255810512; P80C32UBAA

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)
T2EX Pin
Symbol
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2
CP/RL2
T2 Pin
OSC
Position
T2CON.7
T2CON.6
T2CON.5
T2CON.4
T2CON.3
T2CON.2
T2CON.1
T2CON.0
12
Transition
Detector
(MSB)
TF2
C/T2 = 0
C/T2 = 1
Name and Significance
Timer 2 overflow flag set by a Timer 2 overflow and must be cleared by software. TF2 will not be set
when either RCLK or TCLK = 1.
Timer 2 external flag set when either a capture or reload is caused by a negative transition on T2EX and
EXEN2 = 1. When Timer 2 interrupt is enabled, EXF2 = 1 will cause the CPU to vector to the Timer 2
interrupt routine. EXF2 must be cleared by software. EXF2 does not cause an interrupt in up/down
counter mode (DCEN = 1).
Receive clock flag. When set, causes the serial port to use Timer 2 overflow pulses for its receive clock
in modes 1 and 3. RCLK = 0 causes Timer 1 overflow to be used for the receive clock.
Transmit clock flag. When set, causes the serial port to use Timer 2 overflow pulses for its transmit clock
in modes 1 and 3. TCLK = 0 causes Timer 1 overflows to be used for the transmit clock.
Timer 2 external enable flag. When set, allows a capture or reload to occur as a result of a negative
transition on T2EX if Timer 2 is not being used to clock the serial port. EXEN2 = 0 causes Timer 2 to
ignore events at T2EX.
Start/stop control for Timer 2. A logic 1 starts the timer.
Timer or counter select. (Timer 2)
Capture/Reload flag. When set, captures will occur on negative transitions at T2EX if EXEN2 = 1. When
cleared, auto-reloads will occur either with Timer 2 overflows or negative transitions at T2EX when
EXEN2 = 1. When either RCLK = 1 or TCLK = 1, this bit is ignored and the timer is forced to auto-reload
on Timer 2 overflow.
EXF2
EXEN2
0 = Internal timer (OSC/12)
1 = External event counter (falling edge triggered).
Figure 1. Timer/Counter 2 (T2CON) Control Register
Control
RCLK
Figure 2. Timer 2 in Capture Mode
TR2
Control
Capture
TCLK
10
RCAP2L
(8-bits)
EXEN2
TL2
(8-bits)
RCAP2H
TR2
TH2
C/T2
EXF2
TF2
CP/RL2
(LSB)
80C31/80C32
Product specification
SU00728
SU00066
Interrupt
Timer 2