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DS_6612_001
78M6612 Data Sheet
EECTRL Byte Written
INT5
CNT Cycles (6 shown)
Write -- With HiZ
SCLK (output)
SDATA (output)
D7
D6
D5
SDATA output Z
D4
D3
D2
(LoZ)
(HiZ)
BUSY (bit)
Figure 10: 3-Wire Interface. Write Command, HiZ=1
EECTRL Byte Written
INT5
CNT Cycles (8 shown)
READ
SCLK (output)
SDATA (input)
D7
D5
D6
SDATA output Z
D4
D3
D2
D1
D0
(HiZ)
BUSY (bit)
Figure 11: 3-Wire Interface. Read Command
EECTRL Byte Written
INT5 not issued
CNT Cycles (0 shown)
Write -- No HiZ
EECTRL Byte Written
Write -- HiZ
INT5 not issued
CNT Cycles (0 shown)
SCLK (output)
SCLK (output)
SDATA (output)
SDATA (output)
D7
SDATA output Z
SDATA output Z
(LoZ)
(HiZ)
BUSY (bit)
BUSY (bit)
Figure 12: 3-Wire Interface. Write Command when CNT=0
EECTRL Byte Written
INT5
CNT Cycles (6 shown)
Write -- With HiZ and WFR
SCLK (output)
SDATA (out/in)
D7
D6
D5
(From 6520)
SDATA output Z
(LoZ)
D4
D3
D2
BUSY
READY
(From EEPROM)
(HiZ)
BUSY (bit)
Figure 13: 3-Wire Interface. Write Command when HiZ=1 and WFR=1
Rev. 1.1
47