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TC9328AF 数据表(PDF) 4 Page - Toshiba Semiconductor

部件名 TC9328AF
功能描述  Portable Audio DTS Controller (DTS-21)
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制造商  TOSHIBA [Toshiba Semiconductor]
网页  http://www.semicon.toshiba.co.jp/eng
标志 TOSHIBA - Toshiba Semiconductor

TC9328AF 数据表(HTML) 4 Page - Toshiba Semiconductor

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TC9328AF
2004-09-13
4
Description of Pin Function
Pin No.
Symbol
Pin Name
Function and Operation
Remarks
1
COM1/OT1
2
COM2/OT2
3
COM3/OT3
4
COM4/OT4
LCD common
output/Output port
Output common signals to LCD panels.
Through a matrix with pins S1 to S22, a
maximum 88 segments can be
displayed.
Three levels, VLCD, VEE, and GND, are
output at 62.5 Hz every 2 ms.
VEE is output after system reset and
CLOCK STOP are released, and a
common signal is output after the DISP
OFF bit is set to “0”.
These pins can be programmed as
output ports (Note 1).
5~18
S1/OT5~
S14/OT18
LCD segment
output/Output port
19~26
P8-0/S15~
P9-3/S22
LCD segment
output/ I/O port
Segment signal output pins for LCD
panel. Together with COM1 to COM4, a
matrix is formed that can display a
maximum of 88 segments.
All pins from S1 to S14 can be
programmed as output ports (Note),
and all pins from S15 to S22 as I/O
ports, in units of pins.
When the pins function as output ports,
VLCD pin potential and GND potential
are output to them. When the pins
function as I/O ports, drain output is
N-ch open. Because power is supplied
from VLCD for the I/O ports, up to VLCD
voltage (3 V) can be applied.
These data ports (OT1 to OT18) are
incremented by 1 by instruction every
time data are accessed. Therefore, they
can be used for external memory
address signals, facilitating data
access.
Note: After system reset, the output
port pins are set to LCD output,
the I/O port pins to I/O port input.
27~30
P1-0~P1-3
I/O port 1
The input and output of these 4-bit I/O
ports can be programmed in 1-bit units.
These pins can be programmed to be
pulled up or down. Thus, they can be
used as key input pins.
By altering the input of I/O ports set to
input, the CLOCK STOP mode or the
WAIT mode can be released, and the
MUTE bit of the MUTE pin can be set to
“1”.
Note 1: When the LCD pin is set as an output port, the “H” level output is the doubled voltage VLCD. Therefore,
disconnect the voltage doubler boosting capacitor but connect the VLCD pin to the VDD pin.
VLCD
VEE
VLCD
VDD
VDD
RIN1
VDD
Input
instruction
VLCD
VDD


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