HT0313A Tomato LSI, Inc., HT0313A Datasheet - Page 14

• Manufacturer Part Number: HT0313A
• Description: 65COM/132SEG DRIVER & CONTROLLER FOR STN LCD
• Manufacturer: Tomato LSI, Inc.

HT0313A
TOMATO LSI Inc.
Table 5-1. Pin description (continued)
MPU interface
RW_/WR
/RESET
TEST20
DB7
TEST0
E_/RD
Name
DB0
/CS1
NC1
NC0
CS2
C68
to
PS
RS
to
I/O
I/O
I/O
I/O
I
I
I
I
I
I
I
65COM / 132SEG DRIVER & CONTROLLER FOR STN LCD
Hardware reset input pin.
When /RESET is “L”, initialization is executed.
When PS= “L”, DB5 to DB0 are high impedance.
E_/RD and RW_/WR are fixed to either “H” or “L”.
With serial data input, RAM display data reading is not supported.
This pin is the MPU interface switch terminal.
C68 = “H”: 6800 series MPU interface
C68 = “L”: 8080 series MPU interface
Chip select input pin.
Data input/output is enables only when /CS1 is low and CS2 is high.
When chip select is non-active, DB7 to DB0 will be high impedance.
Register select input pin.
RS = “H”: The data on DB7 to DB0 is used the display data.
RS = “L”: The data on DB7 to DB0 is used the control data.
When interfacing to a 6800-series MPU, read/write is enabled at;
RW_/WR = “H”: read
RW_/WR = “L”: write
When interfacing to an 8080-series MPU, RW_/WR is enabled at low.
The signals on the data bus are latched at the rising edge of the RW_/WR signal.
When interfacing to a 6800-series MPU: Active High.
This pin is used as an enable clock input pin of the 6800-series MPU.
When interfacing to a 8080-series MPU: Active Low.
This pin is connected to the RD signal of the 8080-series MPU. While this signal is Low,
HT0313A data bus output is enabled.
8-bit bi-directional data bus.
It is connected to the standard 8-bit microprocessor data bus.
In case of serial interface,(PS = ”L”)
DB7: Serial input data(SID)
DB6: Serial input clock(SCLK)
DB5 to DB0 : High impedance
When chip select is not active, DB7 to DB0 will be high impedance.
These are set to Open.
These are pins for IC chip testing.
These are set to Open.
Parallel/Serial select input pin.
14
PS
H
L
Operating
Parallel
Serial
mode
select
/CS1,
Chip
/CS1,
CS2
CS2
Description
Instruction
Data/
RS
RS
DB7 to
DB0
Data I/O
(SID)
DB7
RW_/WR
E_/RD,
Read/
Write
Write
only
Ver 0.0
(SCLK)
Serial
DB6
-