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71M6545/71M6545H Data Sheet
Name
Location
Rst Wk Dir
Description
SPI_STAT contains the status results from the previous SPI transaction
Bit 7 - 71M6545/H ready error: the 71M6545/H was not ready to read or write as
directed by the previous command.
Bit 6 - Read data parity: This bit is the parity of all bytes read from the 71M6545/H in
the previous command. Does not include the SPI_STAT byte.
SPI_STAT
2708[7:0]
0
0
R
Bit 5 - Write data parity: This bit is the overall parity of the bytes written to the
71M6545/H in the previous command. It includes CMD and ADDR bytes.
Bit 4:2 - Bottom 3 bits of the byte count. Does not include ADDR and CMD bytes.
One, two, and three byte instructions return 111.
Bit 1 - SPI FLASH mode: This bit is zero when the TEST pin is zero.
Bit 0 - SPI FLASH mode ready: Used in SPI FLASH mode. Indicates that the flash is ready to
receive another write instruction.
STEMP[10:3]
STEMP[2:0]
SUM_SAMPS[12:8]
SUM_SAMPS[7:0]
TBYTE_BUSY
TEMP_22[10:8]
TEMP_22[7:0]
TEMP_BAT
Reserved
2881[7:0]
2882[7:5]
2107[4:0]
2108[7:0]
28A0[3]
230A[2:0]
230B[7:0]
28A0[4]
28A0[7]
–
–
0
0
0
0
0
–
–
0
0
–
–
–
R
R
R/W
R
R
R/W
R/W
The result of the temperature measurement.
The number of multiplexer cycles (frames) per XFER_BUSY interrupt. Maximum value
is 8191 cycles.
Indicates that hardware is still writing the 0x28A0 byte. Additional writes to this byte
are locked out while it is one. Write duration could be as long as 6 ms.
Storage location for STEMP[10:0] at 22C. STEMP[10:0] is an 11 bit word.
Causes VBAT_RTC to be measured whenever a temperature measurement is
performed.
Reserved. Must always be zero.
Sets the period between temperature measurements. Automatic measurements can be
enabled in any mode (MSN or SLP). TEMP_PER = 0 disables automatic temperature
updates, in which case TEMP_START may be used by the MPU to initiate a one-shot
temperature measurement.
TEMP_PER[2:0]
28A0[2:0]
0
–
R/W
TEMP_PER
Time (seconds)
0
1-6
7
No temperature updates
2 ( 3 + TEMP _ PER )
Continuous updates
TEMP_PWR
28A0[6]
0
–
R/W
Selects the power source for the temp sensor:
1 = V3P3D, 0 = VBAT_RTC.
This bit is ignored in SLP mode, where the temp sensor is always powered by
VBAT_RTC.
96
v2
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