PCF8584P NXP Semiconductors, PCF8584P Datasheet - Page 16

• Manufacturer Part Number: PCF8584P
• Manufacturer: NXP Semiconductors

Specifications of PCF8584P

• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Operating Temperature (max): 85C
• Package Type: PDIP
• Rad Hardened: No
• Lead Free Status / Rohs Status: Compliant

handbook, full pagewidth
Philips Semiconductors
1997 Oct 21
I
2
C-bus controller
PCF8584 remains in
master transmitter
mode if R/W bit of
'slave address' = 0
yes
no
read byte from S1 register
read byte from S1 register
m = number of data bytes
send byte 'slave address'
n = 0 (data byte counter);
send C5H to control
to be transferred
send byte 'data'
acknowledged?
is bus busy?
PIN bit = 0?
register S1
(LRB = 0?)
(BB = 0?)
n = n + 1
START
n = m
slave
yes
yes
no
no
Fig.6 PCF8584 master transmitter mode.
yes
A0 = HIGH
A0 = HIGH
A0 = HIGH
A0 = LOW
A0 = LOW
Load 'data'
into bus
buffer register S0;
data is transmitted.
16
transmission
completed
Load 'slave address' into S0 register:
'slave address' = value of slave address
(7-bits + R/W = 0). After reset, default = '0'
Load C5H into S1. 'C5H' = PCF8584 generates
the 'START' condition and clocks out the slave
address and the clock pulse for slave acknowledgement.
Next byte(s) sent to the S0 register will be immediately
transferred over the I
Poll for transmission finished.
send byte C3H
END
2
C-bus.
A0 = HIGH
Load C3 into the S1 control
register: PCF8584 generates
'STOP' condition.
PCF8584 goes into
slave receiver mode
Product specification
PCF8584
MBE715