參數(shù)資料
型號: UPD16664
廠商: NEC Corp.
英文描述: 144/160/184/208-OUTPUT LCD COLUMN SEGMENT DRIVER WITH RAM
中文描述: 144/160/184/208-OUTPUT液晶柱段驅(qū)動與RAM
文件頁數(shù): 29/52頁
文件大小: 347K
代理商: UPD16664
Data Sheet S13780EJ1V0DS00
29
μ
PD16664
16. SELF-DIAGNOSIS FUNCTION
This function checks whether the timing of each column driver is different from that of the others due to external
noise. A slave chip compares internally generated L1 and L2 with L1 and L2 of the master chip. If a discrepancy is
found, a refresh signal is transmitted to all column drivers. On reception of the refresh signal, internal reset is
effected, and timing is initialized. At this time, the display is turned OFF while /REFRH = L for 4 frame cycles.
Discrepancy between L1 and L2 is monitored at the rising edge of /FRM once in 1/2 frame.
L1(master)
L2(master)
L1(slave)
L2 (slave)
/REFRH
Discrepancy
Initialization
Initialization
Discrepancy
Block Configuration (slave side)
/RESET
/REFRH
L1
L2
Self-diagnosis circuit
Internal L1 signal
Internal L2 signal
Internal reset
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