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GA1621 Datasheet Preview

GA1621 Datasheet

multi-function LCD driver

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GA1621
LCD 驱动电路
GA1621General Description
The GA1621 is a 128 dots (32x4), memory mapping, and multi-function LCD driver. The S/W con-figuration feature of the
GA1621 makes it suitable for multiple LCD applications including LCD modules and display subsystems. Only three or four
lines are required for the interface between the host controller and the GA1621. The GA1621 contains a power down command to
reduce power consumption.
GA1621Features
z Operating voltage: 2.4V~5.2V
z Built-in 256kHz RC oscillator
z Software configuration feature
z Data mode and command mode instructions
z 8 kinds of time base/WDT clock sources
z R/W address auto increment
z 32x4 LCD driver
z Three data accessing modes
z 3-wire serial interface
z Power down command reduces power
z Internal LCD driving frequency source
Consumption
GA1621Pad Assignment
IC SIZE:2.20mm X 2.15mm
The ic cubstrate should be connecte to VDD in PCB layout artwork
森川电子科技有限公司
TEL: 0755-88291843 88304213
ADD: 深圳市福田滨河路海滨广场福长阁 16
E-mail: jja@sc-tech.cn
Http:// www.sc-tech.cn
Free Datasheet http://www.datasheet4u.com/




SilvanChip

GA1621 Datasheet Preview

GA1621 Datasheet

multi-function LCD driver

No Preview Available !

GA1621
GA1621 Pad Coordinates
LCD 驱动电路
GA1621 Pad Descriptions
Pad No.
1
2
3
4
Pad Name
CS-
RD-
WR-
DATA
I/O Description
Chip selection input with pull-high resistor.
When the CS- is logic high, the data and command read from or written to the GA1621
I are disabled. The serial interface circuit is also reset. But if CS- is at logic low level and
is input to the CS- pad, the data and command transmission between the host controller
and the GA1621 are all enabled.
READ clock input with pull-high resistor.
Data in the RAM of the GA1621 are clocked out on the falling edge of the RD- signal.
I The clocked out data will appear on the DATA line. The host controller can use the next
rising edge to latch the clocked out data.
I
WRITE clock input with pull-high resistor. Data on the DATA line are latched into the
GA1621 on the rising edge of the WR-signal.
I/O Serial data input/output with pull-high resistor
5
GND
-- Negative power supply, ground
6
OSCO
O The OSCI and OSCO pads are connected to a 32.768kHz crystal in order to generate a
system clock. If the system clock comes from an external clock source, the external
7
OSCI
I clock source should be connected to the OSCI pad. But if and on-chip RC oscillator is
selected instead, the OSCI and OSCO pads can be left open.
8
VLCD
I VLCD I LCD power input
9
VDD
-- Positive power supply
10 IRQ O Time base or WDT overflow flag, NMOS open drain output
11,12
BZ,BZ-
O 2kHz or 4kHz tone frequency output pair
13~116 COM0~COM3 O LCD common outputs
48~17
SEG0 ~ 31 O LCD segment outputs
GA1621 Absolute Maximum Ratings
Supply Voltage ---------------------- -0.3V ~ 5.5V
Input Voltage -------- VSS - 0.3V ~ VDD + 0.3V
Storage Temperature ------------------ -50 ~ 125
Operating Temperature ---------------- -25 ~ 75
森川电子科技有限公司
TEL: 0755-88291843 88304213
ADD: 深圳市福田滨河路海滨广场福长阁 16
E-mail: jja@sc-tech.cn
Http:// www.sc-tech.cn
Free Datasheet http://www.datasheet4u.com/


Part Number GA1621
Description multi-function LCD driver
Maker SilvanChip
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