Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
Name
Location
Reset Wake
Dir
Description
COMP_STAT[0] 2003[0]
–
0
0
0
0
0
0
0
0
0
0
0
0
–
0
0
0
0
0
0
0
0
0
0
0
0
R
Status bit for the V1 comparator (same as V1_OK, see TMUXOUT)
DI_RPB[2:0]
DIO_R1[2:0]
DIO_R2[2:0]
DIO_R4[2:0]
DIO_R5[2:0]
DIO_R6[2:0]
DIO_R7[2:0]
DIO_R8[2:0]
DIO_R9[2:0]
DIO_R10[2:0]
DIO_R11[2:0]
DIO_RRX[2:0]
R/W Connects dedicated I/O pins DIO2 and DIO4 through DIO11 as well as input pins PB,
DIO1 and RX to internal resources. If more than one input is connected to the same
resource, the Multiple column in the table below specifies how they are combined.
2009[2:0]
2009[6:4]
200A[2:0]
200B[2:0]
200B[6:4]
200C[2:0]
200C[6:4]
200D[2:0]
200D[6:4]
200E[2:0]
200E[6:4]
20AF[2:0]
DIO_Rx[2:0]
000
Resource
Multiple
–
NONE
001
Reserved
OR
010
T0 (Counter /Timer 0 clock or gate)
T1 (Counter /Timer 1 clock or gate)
High priority IO interrupt (int0 rising)
Low priority IO interrupt (int1 rising)
OR
011
OR
100
OR
101
OR
High priority IO interrupt (int0 fall-
ing)
110
OR
111
Low priority IO interrupt (int1 falling)
OR
Programs the direction of DIO pins 7 through 1. 1 indicates an output. The bits are
R/W ignored if the pin is not configured as DIO. See DIO_PV and DIO_PW for special options
for DIO6 and DIO7. See DIO_EEX[1:0] for special options for DIO4 and DIO5.
DIO_DIR0[7:1] SFR A2 [7:1]
0
–
Programs the direction of DIO pins 15 through 8. 1 indicates an output. The bits are
R/W ignored if the pin is not configured as I/O. See DIO_PX and DIO_PW for special options
for the DIO8 and DIO9 outputs.
DIO_DIR1[7:0]
DIO_DIR2[1]
SFR 91
0
0
–
–
SFR A1[1]
R/W Programs the direction of DIO17.
The value on the DIO pins. Pins configured as LCD will read zero. When written, changes
data on pins configured as outputs. Pins configured as LCD or input will ignore writes.
DIO_0[7:1] corresponds to DIO7 through DIO1. PB is read on DIO_0[0].
DIO_1[7:0] corresponds to DIO15 through DIO8.
DIO_0[7:0]
DIO_1[7:0]
DIO_2[1]
SFR 80
SFR 90
SFR A0[1]
SFR B0[5:4]
0
0
0
0
R/W
R/W
R/W
R/W
−
–
–
–
DIO_3[5:4]
DIO_2[1] corresponds to DIO17.
DIO_3[5:4] corresponds to DIO28 and DIO29.
When set, converts DIO4 and DIO5 to interface with external EEPROM. DIO4 becomes
SDCK and DIO5 becomes bi-directional SDATA.
DIO_EEX[1:0]
Function
00
01
10
11
Disable EEPROM interface
2-Wire EEPROM interface
3-Wire EEPROM interface
not used
DIO_EEX[1:0]
2008[7:6]
0
0
R/W
78
© 2005-2010 TERIDIAN Semiconductor Corporation
v1.3
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