P87C554SBAA NXP Semiconductors, P87C554SBAA Datasheet - Page 30

• Manufacturer Part Number: P87C554SBAA
• Description: MCU 8-Bit 87C 80C51 CISC 16KB EPROM 5V 68-Pin PLCC Tube
• Manufacturer: NXP Semiconductors

Specifications of P87C554SBAA

• Package: 68PLCC
• Device Core: 80C51
• Family Name: 87C
• Maximum Speed: 16 MHz
• Ram Size: 512 Byte
• Program Memory Size: 16 KB
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 40
• Interface Type: I2C/UART
• On-chip Adc: 7-chx10-bit
• Operating Temperature: 0 to 70 °C
• Number Of Timers: 3

In all cases, if the enable bit is 0, then the interrupt is disabled, and if the enable bit is 1, then the interrupt is enabled.
Philips Semiconductors
2003 Jan 28
80C51 8-bit microcontroller – 6-clock operation
16K/512 OTP/ROMless, 7 channel 10 bit A/D, I
high I/O, 64L LQFP
IEN1 (E8H)
IP0H (B7H)
IP0 (B8H)
BIT
IEN1.7
IEN1.6
IEN1.5
IEN1.4
IEN1.3
IEN1.2
IEN1.1
IEN1.0
BIT
IP0.7
IP0.6
IP0.5
IP0.4
IP0.3
IP0.2
IP0.1
IP0.0
BIT
IP0H.7
IP0H.6
IP0H.5
IP0H.4
IP0H.3
IP0H.2
IP0H.1
IP0H.0
(MSB)
(MSB)
(MSB)
ET2
7
7
–
7
–
ECM2
PADH
PAD
SYMBOL
ET2
ECM2
ECM1
ECM0
ECT3
ECT2
ECT1
ECT0
SYMBOL
–
PAD
PS1
PS0
PT1
PX1
PT0
PX0
SYMBOL
–
PADH
PS1H
PS0H
PT1H
PX1H
PT0H
PX0H
Figure 30. Interrupt Priority Register High (IP0H)
6
6
6
Figure 28. Interrupt Enable Register (IEN1)
Figure 29. Interrupt Priority Register (IP0)
ECM1
PS1H
PS1
5
5
5
FUNCTION
Enable Timer T2 overflow interrupt(s)
Enable T2 Comparator 2 interrupt
Enable T2 Comparator 1 interrupt
Enable T2 Comparator 0 interrupt
Enable T2 Capture register 3 interrupt
Enable T2 Capture register 2 interrupt
Enable T2 Capture register 1 interrupt
Enable T2 Capture register 0 interrupt
FUNCTION
Unused
ADC interrupt priority level
SIO1 (I
SIO0 (UART) interrupt priority level
Timer 1 interrupt priority level
External interrupt 1 priority level
Timer 0 interrupt priority level
External interrupt 0 priority level
FUNCTION
Unused
ADC interrupt priority level high
SIO1 (I
SIO0 (UART) interrupt priority level high
Timer 1 interrupt priority level high
External interrupt 1 priority level high
Timer 0 interrupt priority level high
External interrupt 0 priority level high
ECM0
PS0H
PS0
2
2
4
4
4
C) interrupt priority level
C) interrupt priority level high
2
C, PWM, capture/compare,
30
ECT3
PT1H
PT1
3
3
3
PX1H
ECT2
PX1
2
2
2
ECT1
PT0H
PT0
1
1
1
ECT0
(LSB)
(LSB)
PX0H
(LSB)
PX0
SU00755
SU00763
SU00983
0
0
0
80C554/87C554
Product data