参数资料
型号: LC75806PT-H
厂商: ON Semiconductor
文件页数: 32/35页
文件大小: 0K
描述: IC LCD DISPL DVR KEY-INP 100TQFP
标准包装: 90
系列: *
LC75806PT
Data Communication Flowchart of 4 Line Type or 3 Line Type CCB Format
1. Flowchart of the initial setting when power is turned on.
Power on
(Applications must observe that the power
supply VDD rise time is at least 1ms.)
Power supply stability
(Applications must wait till the level of
the power supply is stable)
Serial data input
(Display and control data transfer)
System reset clear
(Display on, Key scanning is enabled,
General-purpose output port state
setting are enabled)
2. Flowchart of the serial data input
Data communication start
command transfer
Serial data input
(Display and control data transfer)
*19
Note: The flowchart of initial setting when power is
turned on is same regardless of the 4 line type
or 3 line type CCB format.
Take explanation about "system reset" into account.
NO
The controller
wants to detect the key
data read request signal
(a low level on DO).
YES
Note: *19. In the case of the 4 line type CCB format,
the transfers of data communication start
command and data communication stop
command are unnecessary, and, in the case
of the 3 line type CCB format, these transfers
Data communication stop
command transfer
3. Flowchart of the serial data output
The controller
NO
acknowledges the key data read
request (When the CE is low,
the DO is low)
YES
Data communication start
command transfer
Serial data output
(Key data and sleep
acknowledge data read)
*19
*20
*21
are necessary.
Note: *20. In the case of the 4 line type CCB format,
the transfer of data communication start
command is unnecessary, and, in the case
of the 3 line type CCB format, the transfer
is necessary.
*21. Because the serial data output has the role
of the data communication stop command,
it is not necessary to transfer the data
communication stop command some other
time.
No.A1425-32/35
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