PCF2119AU/2DA/2 NXP [NXP Semiconductors], PCF2119AU/2DA/2 Datasheet - Page 6

• Manufacturer Part Number: PCF2119AU/2DA/2
• Description: LCD controllers/drivers
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF2119X_5
Product data sheet
Table 3.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
Symbol
R/W
RS
DB0 to DB2,
DB3/SA0,
DB4 to DB7
OSC
Always put V
When the I
The substrate (rear side of the die) is wired to V
On the device connected to V
When the parallel bus is used, the pins SCL and SDA must be connected to V
left open-circuit.
In the I
open-circuit.
When the 4-bit interface is used without reading out from the PCF2119x (bit R/W is set permanently to
logic 0), the unused ports DB4 to DB0 can either be set to V
open-circuit.
2
C-bus read mode, ports DB7 to DB4 and DB2 to DB0 should be connected to V
Pin description
2
C-bus is used, the parallel interface pin E must be LOW.
DD2
Pin
158
159
160 to 162,
163,
164 to 167
168
= V
DD3
Rev. 05 — 13 August 2009
.
…continued
SS1
[6][7
]
.
Description
read/write input
register select pin;
8 bit bidirectional data bus (bit 0 to bit 7)
oscillator or external clock input
•
•
•
•
•
•
•
•
•
•
pin R/W = HIGH selects the read operation
pin R/W = LOW selects the write operation
this pin has an internal pull-up resistor
this pin has an internal pull-up resistor
the 8-bit bidirectional data bus (3-state) transfers data
between the microcontroller and the PCF2119x
pin DB7 may be used as the busy flag, signalling that
internal operations are not yet completed
4-bit operations the 4 higher order lines DB7 to DB4 are
used, DB3 to DB0 must be left open-circuit
data bus line DB3 has an alternative function (SA0) as the
I
each data line has its own internal pull-up resistor
when the on-chip oscillator is used this pin must be
connected to V
2
C-bus address pin
SS
but should not be electrically connected.
DD1
SS1
or V
DD1
instead of leaving them
LCD controllers/drivers
SS1
PCF2119x
or V
© NXP B.V. 2009. All rights reserved.
DD1
DD1
; they must not be
or left
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