upd178016 Renesas Electronics Corporation., upd178016 Datasheet - Page 12

• Manufacturer Part Number: upd178016
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

12
Pin No.
38
39
40
41
42
43
44
45
46
47
48
LCD CLK
LCD STB
LCD OFF
KEYREQ
POWIN
PNL LED
MONO
VOL SDA
VOL SCL
CD DATA
LOUD
Symbol
LCD driver strobe
LCD driver clock
output
signal output
LCD driver display
OFF signal output
LCD driver key
request signal input
Power key signal
input
Panel detachment
detection LED signal
output
MONO signal output
Electronic volume
control data input/
output
Electronic volume
control clock output
CD changer data
output
Loudness signal
output
Pin name
( PD16431A).
Reads data at a rising edge and outputs data at a falling edge.
The serial interface with the LCD controller/driver is of 2-wire serial
type.
Output pin for the strobe signal to the LCD controller/driver
( PD16431A).
Outputs data while low.
Processes data at a rising edge.
Output pin for sending the display OFF signal to the LCD controller/
driver ( PD16431A).
Input pin for the key request signal, output by the LCD controller/
driver ( PD16431A). When a high level signal is input, key data is
read.
Signal input pin used to detect power key input.
Output pin for the LED signal indicating that the front panel has
been detached. In this state, the pin outputs a 1-Hz signal.
The active level is high.
Control signal output pin of forced MONO.
The signal is output as follows:
This pin outputs a high level when the power is first applied.
Input/output pin for the serial data that is fed to the electronic
volume control (TDA7313, TEA6320).
Output pin for the serial clock that is fed to the electronic volume
control (TDA7313, TEA6320).
Data is read at a rising edge and data is output at a falling edge.
The interface with the electronic volume control is of I
Output pin for the data to the CD changer.
Output pin for the loudness control signal.
The signal is output as indicated in the table below.
This pin outputs a low level when the power is first applied.
Output pin for sending the serial clock to the LCD controller/driver
MONO pin
LOUD pin
0
1
0
1
Forced MONO ON
Forced MONO OFF
Loudness OFF
Loudness ON
Description
Description
Description
(0: Low, 1: High)
(0: Low, 1: High)
2
C bus type.
PD178016GC-051
push-pull
output
CMOS
push-pull
output
CMOS
push-pull
output
Input
Input
CMOS
push-pull
output
CMOS
push-pull
output
Input
N-ch
open-
drain
output
N-ch
open-
drain
output
N-ch
open-
drain
output
N-ch
open-
drain
output
CMOS
I/O type