參數(shù)資料
型號： 71M6541F-IGTR/F
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP64
封裝： LEAD FREE, LQFP-64
文件頁數(shù)： 136/165頁
文件大?。?/td> 2208K
代理商： 71M6541F-IGTR/F
72
2008–2011 Teridian Semiconductor Corporation
v1.1
4
RD
W
Indicates that EEDATA (SFR 0x9E) is to be filled with data from EEPROM.
3:0
CNT[3:0]
W
Specifies the number of clocks to be issued. Allowed values are 0
through 8. If RD=1, CNT bits of data are read MSB first, and right
justified into the low order bits of EEDATA. If RD=0, CNT bits are sent
MSB first to the EEPROM, shifted out of the MSB of EEDATA. If
CNT[3:0] is zero, SDATA simply obeys the HiZ bit.
The timing diagrams in Figure 22 through Figure 26 describe the 3-wire EEPROM interface behavior. All
commands begin when the EECTRL (SFR 0x9F) register is written. Transactions start by first raising the
DIO pin that is connected to CS. Multiple 8-bit or less commands such as those shown in Figure 22
through Figure 26 are then sent via EECTRL and EEDATA.
When the transaction is finished, CS must be lowered. At the end of a Read transaction, the EEPROM is
driving SDATA, but transitions to Hi-Z (high impedance) when CS falls. The firmware should then
immediately issue a write command with CNT=0 and HiZ=0 to take control of SDATA and force it to a
low-Z state.
Figure 22: 3-wire Interface. Write Command, HiZ=0.
Figure 23: 3-wire Interface. Write Command, HiZ=1
Figure 24: 3-wire Interface. Read Command.
SCLK (output)
BUSY (bit)
CNT Cycles (6 shown)
SDATA (output)
Write -- No HiZ
D2
D3
D4
D5
D6
D7
EECTRL Byte Written
INT5
SDATA output Z
(LoZ)
CNT Cycles (6 shown)
Write -- With HiZ
INT5
EECTRL Byte Written
SCLK (output)
BUSY (bit)
SDATA (output)
D2
D3
D4
D5
D6
D7
(HiZ)
(LoZ)
SDATA output Z
CNT Cycles (8 shown)
READ
D0
D1
D2
D3
D4
D5
INT5
D6
D7
EECTRL Byte Written
SCLK (output)
BUSY (bit)
SDATA (input)
SDATA output Z
(HiZ)
相關(guān)PDF資料
PDF描述
71M6541D-IGTR/F SPECIALTY ANALOG CIRCUIT, PQFP64
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71M6541D-IGT/F SPECIALTY ANALOG CIRCUIT, PQFP64
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