MIC3002_10 Datasheet, PDF (51/65 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3002
USER Password (USRPW)
D[7]
read/write
Default Value
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
0000 0000b = 00h
D[2]
read/write
D[1]
read/write
D[0]
read/write
Serial Address
A2h
Byte Address
247 = F7h
USER passwords are entered in this field. This field is compared to the USRPWSET field at serial address A2h, byte 246
(F6h). If the two fields match, access is allowed to the USER areas of the MIC3002 non-volatile memory at serial addresses
A0h and A2h. If a valid USER password has not been entered, writes to the serial ID fields and user scratchpad areas of A0h
and A2h will not be allowed and USRPWSET will be unreadable (returns all zeroes).
Power-On Hours
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default Value
0000 0000b = 00h
Serial Address
A6h
Bytes Address
MSB (POHh): 251 = FBh
LSB (POHl): 252 = FCh
The lower seven bits of POHh register contain the most-significant bits of the 15-bit power-on hours measurement. POHFLT is
an error flag. The value in POHh should be combined with the Power-on Hours, Low Byte, POHl, to yield the complete result.
If POHFLT is set, the power-on hour meter data has been corrupted and should be ignored. It is recommended that a two-byte
(or more) sequential read operation be performed on POHh and POHl to insure coherency between the two registers. This
register is non-volatile and will be maintained through power and reset cycle.
POHh Bit(s)
D[7]
D[6:0]
Function
Power-on hours fault flag
Power-on hours, high byte
Operation
1 = fault; 0 = no fault.
Non-volatile.
Data Ready Flags (DATARDY)
D[7]
TRDY
read/write
D[6]
VRDY
read/write
D[5]
IRDY
read/write
D[4]
TXRDY
read/write
D[3]
RXDY
read/write
D[2]
reserved
D[1]
reserved
D[0]
reserved
Default Value
0000 0000b = 00h
Serial Address
A6h
Byte Address
253 = FDh
When the A/D conversion for a given parameter is completed and the results available to the host, the corresponding data
ready flag will be set. The flag will be cleared when the host reads the corresponding result register.
Bit(s)
D[7]
TRDY
D[6]
VRDY
D[5]
IRDY
D[4]
TXRDY
D[3]
RXRDY
D[2:0]
Function
Temperature data ready flag
Voltage data ready flag
Bias current data ready flag
Transmit power data ready flag
Receive power data ready flag
Reserved
Operation
0 = old data; 1 = new data ready
0 = old data; 1 = new data ready
0 = old data; 1 = new data ready
0 = old data; 1 = new data ready
0 = old data; 1 = new data ready
Reserved
July 2007
51
M9999-073107-B
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