71M6521DE TERIDIAN [Teridian Semiconductor Corporation], 71M6521DE Datasheet - Page 44
71M6521DE
Manufacturer Part Number
71M6521DE
Description
Energy Meter IC
Manufacturer
TERIDIAN [Teridian Semiconductor Corporation]
Datasheet
1.71M6521DE.pdf
(101 pages)
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Write -- With HiZ and WFR
SDATA output Z
SDATA (output)
SDATA output Z
EECTRL Byte Written
SCLK (output)
SDATA (out/in)
EECTRL Byte Written
SCLK (output)
Write -- No HiZ
BUSY (bit)
BUSY (bit)
SDATA output Z
SDATA (input)
EECTRL Byte Written
SCLK (output)
SDATA output Z
SDATA (output)
EECTRL Byte Written
SCLK (output)
Write -- With HiZ
BUSY (bit)
BUSY (bit)
READ
Figure 13: 3-Wire Interface. Write Command when HiZ=1 and WFR=1.
D7
INT5 not issued
Figure 12: 3-Wire Interface. Write Command when CNT=0
D7
Figure 10: 3-Wire Interface. Write Command, HiZ=1
(LoZ)
© 2005-2008 TERIDIAN Semiconductor Corporation
Figure 11: 3-Wire Interface. Read Command.
CNT Cycles (0 shown)
D7
D6
D7
(From 6520)
CNT Cycles (6 shown)
(LoZ)
D6
D5
D6
CNT Cycles (8 shown)
CNT Cycles (6 shown)
(HiZ)
(LoZ)
D5
D4
SDATA output Z
SDATA (output)
D5
EECTRL Byte Written
SCLK (output)
71M6521DE/71M6521FE
Write -- HiZ
BUSY (bit)
D4
D3
D4
D2
D3
D3
D2
Energy Meter IC
(From EEPROM)
(HiZ)
INT5 not issued
BUSY
D2
INT5
(HiZ)
(HiZ)
D1
CNT Cycles (0 shown)
DATASHEET
READY
INT5
D0
JANUARY 2008
INT5
v1.0
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