ST7669V
Read / Write execution control pin. (This pin is only used in parallel interface)
MPU type
RW_WR
Description
Read / Write control input pin
RW = “H” : read
6800-series
RW
RW_WR
I
RW = “L” : write
Write enable clock input pin.
The data on D0 to D17 are latched at the
rising edge of the /WR signal.
8080-series
/WR
When in the serial interface, connect it to VDD.
Read / Write execution control pin. (This pin is only used in parallel interface)
MPU Type
E_RD
Description
Read / Write control input pin
RW= “H”: If E is “H”, D0 to D17 are in an output status.
RW = “L”: The data on D0 to D17 are latched at the
falling edge of the E signal.
6800-series
E
E_RD
I
Read enable clock input pin
8080-series
/RD
When /RD is “L”, D0 to D17 are in an output status.
When in the serial interface, connect it to VDD.
They connect to the standard 8-bit or 16 bit MPU bus via the 8/16/18 –bit bi-directional bus.
When the following interface is selected and the /CS pin is high, the following pins become high
impedance.
D17 to D0
I/O
1. In 8-bit parallel: D17-D8 pins are in the state of high impedance should connect to VDD.
2. In 3-line/4-line interface D0 pad will be used for SI function
3. In 4-line interface D1 pad will be used for A0 function
4. In Serial interface: no-used pins are in the state of high impedance should connect to VDD.
SI is used to input serial data when the serial interface is selected.(3 line and 4 line)
In ST7669V, D0 is the SI when select serial interface. See Table 7.1.1
SCL is used to input serial clock when the serial interface is selected.
The data is converted in the rising edge. (3 line and 4 line)
SI
I
SCL
TE
I
In ST7669V, A0 is the SCL when select serial interface. See Table 7.1.1
O
Tearing effect output.
OTP burn-in control pin. When burning OTP, please add an external VSS on /EXT.
There is a pull-high resistor between /EXT & VDD in ST7669V.
When using normal instruction table, please let it open.
/EXT
I
When using extension instruction table, please connect /EXT to VSS.
NOTE：
1. In any status the control bus and data bus can’t be floating.
2. The no-used pins should connect to VDD (Supply Digital Voltage)
Ver 1.3
17/208
6/4/2008
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
