PCF84C00T PHILIPS [NXP Semiconductors], PCF84C00T Datasheet - Page 4

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

Philips Semiconductors
4
1996 Nov 25
handbook, full pagewidth
8-bit microcontroller with I
BLOCK DIAGRAM
SUPPLY
POWER
SIO
interrupt
ACCUMULATOR
clock
POWER
RESET
RESET
SCLK
ON
INTERFACE
I
2
C-BUS
8
data
V DD
V SS
(8)
V POR
GND
STOP
IDLE
PORT 2
LATCH
TEMPORARY
REGISTER 1
SERIAL DATA/P2.3
4
INTERRUPT
BUFFER
FREQUENCY
PORT 2
INT/T0
INTERNAL
(8)
CLOCK
P2.2 to P2.0
30
external
interrupt
3
TEMPORARY
REGISTER 2
INITIALIZE
CONTROL & TIMING
RESET
32
TEST 1
(8)
2
C-bus interface
XTAL 1
FLIP-FLOPS
COUNTER
MEMORY
INTERRUPT
8
OSCILLATOR
TIMER/
EVENT
BANK
LOGIC
XTAL
ARITHMETIC
LOGIC UNIT
DECIMAL
ADJUST
Fig.1 Block diagram.
(8)
timer
interrupt
XTAL 2
FIGS 2 AND 3"
PROGRAM
COUNTER
(8)
HIGHER
"SEE
13
5
(5)
4
INSTRUCTION
REGISTER
DECODER
PROGRAM
COUNTER
LOWER
&
8
(8)
CONDITIONAL
PROGRAM
COUNTER
8
BRANCH
LOGIC
PROGRAM
STATUS
PORT 1
WORD
LATCH
7
REGISTER
ADDRESS
P1.7 to P1.0
RAM
ACC
ACC BIT
TEST 1
TIMER FLAG
CARRY
BUFFER
INT/T0
PORT 1
TEST
8
8
D
E
C
O
D
E
PORT 0
RESIDENT RAM ARRAY
LATCH
(VARIABLE LENGTH)
OPTIONAL SECOND
MULTIPLEXER
Product specification
8 LEVEL STACK
REGISTER BANK
DATA STORE
PCF84C00
REGISTER 0
REGISTER 1
REGISTER 2
REGISTER 3
REGISTER 4
REGISTER 5
REGISTER 6
REGISTER 7
P0.7 to P0.0
BUFFER
PORT 0
8
8
MGG401