參數(shù)資料
型號(hào)： HD66725
廠商： Hitachi,Ltd.
英文描述： Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器)
中文描述： 圖形液晶顯示控制器/鍵掃描功能（帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動(dòng)器驅(qū)動(dòng)程序）
文件頁(yè)數(shù)： 16/117頁(yè)
文件大?。?/td> 834K
代理商： HD66725
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HD66724/HD66725
16
Pin Functions
Table 2
Pin Functional Description
Signals
IM2, IM1
Number of
Pins
2
I/O
I
Connected to
V
CC
or GND
Functions
Selects the MPU interface mode:
IM2
“GND”
“GND”
“Vcc”
“Vcc”
“Vcc”
IM1
“GND”
“Vcc”
“GND”
MPU interface
Clock-synchronized serial interface
68-system parallel bus interface
Setting inhibited
80-system parallel bus interface
IM0/ID
1
I
V
CC
or GND
Inputs the ID of the device ID code for a serial bus
interface. Selects the transfer bus width for a parallel
bus interface.
GND: 8-bit bus, Vcc: 4-bit bus
Selects the HD66724/HD66725:
Low: HD66724/HD66725 are selected and can be
accessed
High: HD66724/HD66725 are not selected and
cannot be accessed
Must be fixed at GND level when not in use.
Selects the register for a parallel bus interface.
Low: Instruction
High: RAM access
Selects the key scan interrupt method in the standby
period for a serial interface. Monitors a total of eight
keys connected to KST0 at the GND level and
monitors all keys at the Vcc level to generate an
interrupt. Must be fixed at the Vcc or GND level.
Inputs the serial transfer clock for a serial interface.
Fetches data at the rising edge of a clock.
For a 68-system parallel bus interface, serves as an
enable signal to activate data read/write operation.
For an 80-system parallel bus interface, serves as a
write strobe signal and writes data at the low level.
Serves as the bidirectional serial transfer data for a
serial interface. Sends/Receives data.
For a 68-system parallel bus interface, serves as a
signal to select data read/write operation.
For an 80-system parallel bus interface, serves as a
write strobe signal and reads data at the low level.
Generates the key scan interrupt signal.
Generates strobe signals for latching scanned data
from the key matrix at specific time intervals.
Available for a serial interface only.
Samples key state from key matrix synchronously
with strobe signals for a serial interface.
Serves as a bidirectional data bus for a parallel bus
interface.
For a four-bit bus, data transfer uses KIN7/DB7–
KIN4/DB4; leave KIN3/DB3–KIN0/DB0 disconnected.
CS*
2
I
MPU
RS
2
I
MPU
E/WR*/SCL 2
I
MPU
RW/RD*/
SDA
2
I/O or
I
MPU
IRQ*
KST0–
KST3
2
8
O
O
MPU
Key matrix
DB0/KIN0–
DB7/KIN7
16
I or
I/O
Key matrix or
MPU
相關(guān)PDF資料
PDF描述
HD66726 Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器)
HD66727 Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅(qū)動(dòng)器)
HD66728 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器)
HD66730 Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
HD66731 Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66725A03TA0L 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD CONTROLLER
HD66726 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions
HD66726A03TB0L 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Industrial Control IC
HD66727 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
HD66727A03 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Display Driver
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