PCF84C00T PHILIPS [NXP Semiconductors], PCF84C00T Datasheet - Page 7

• Manufacturer Part Number: PCF84C00T
• Description: 8-bit microcontroller with I2C-bus interface
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
Note
1. The interrupt signal must remain active until the vector address (05 H) is present on the address bus.
1996 Nov 25
RESET
P1.0 to P1.3
EXDI
P1.4 to P1.7
P2.0 to P2.1
V
DD
8-bit microcontroller with I
SYMBOL
45 to 48
50 to 53
54, 55
PIN
44
49
56
TYPE
I/O
I/O
I/O
I/O
P
I
reset input: used to initialize the microcontroller (active HIGH); also output of
power-on-reset circuit
4 bits of Port 1: 8-bit quasi-bidirectional I/O port
External derivative interrupt (active LOW): EXDI is ‘OR-ed’ with the internal
serial interrupt and can be used to initiate an interrupt from external hardware
emulating derivative functions. EXDI is pulled HIGH internally. The derivative
interrupt is polled during time slot TS6 (note 1), and is only accepted if an EN
SI instruction has been executed and the device is not already executing an
interrupt routine. Derivative interrupts are not latched in the PCF84C00.
4 bits of Port 1: 8-bit quasi-bidirectional I/O port
2 bits of Port 2: 4-bit quasi-bidirectional I/O port
power supply: 2.5 V to 5.5 V
2
C-bus interface
7
DESCRIPTION
Product specification
PCF84C00