EMC1704 Datasheet, PDF (58/68 Pages) Microchip Technology – High-Side Current-Sense and Multiple 1°C Temperature Monitor

High-Side Current-Sense and Multiple 1°C Temperature Monitor
Datasheet
Limit Status registers (see Section 5.15 and Section 5.16).
5.27 Critical Voltage Limit Registers
ADDR
66h
68h
69h
6Ah
Table 5.42 Critical Voltage Limit Registers
R/W
REGISTER
B7
B6
B5
B4
R/W Sense Voltage Sign 1024 512
256
Vcrit Limit
R/W Source Voltage 12
6
3
1.5
Vcrit Limit
R/W Sense Voltage
-
-
-
256
Vcrit Hysteresis
R/W Source Voltage
-
-
-
1.5
Vcrit Hysteresis
B3
B2
128
64
0.75 0.375
128
64
0.75 0.375
B1
32
0.1875
32
0.1875
B0
DEFAULT
16
7Fh
0.0938
FFh
16
0Ah
0.0938
0Ah
The Critical Voltage Limit registers store the critical voltage limits (Vcrit limits) for V_SENSE and V_SOURCE.
If the respective value meets or exceeds its critical limit, the THERM pin will be asserted low and the
respective VCRIT status bit will be set (see Section 5.17, "Crit Limit Status Register"). It will remain
asserted until the respective value drops below its limit minus the respective Vcrit Hysteresis value.
5.28 GPIO Config and Status Register
ADDR
70h
R/W REGISTER
R/W
GPIO
Config
Table 5.43 GPIO Config and Status Register
B7
B6
B5
B4
B3
B2
B1
-
-
-
-
GPIO_ GPIO_ GPIO_
MSK
IN
OUT
B0
GPIO_
DIR
DEFAULT
08h
EMC1704
The GPIO Configuration Register controls the GPIO pin.
Bit 3 - GPIO_MSK - Determines whether the GPIO pin, when configured as a GPIO input, will cause
the ALERT pin to be asserted. When the GPIO pin is configured as an output, this bit is ignored.
 ‘0’ - When configured as a GPIO input, the ALERT pin is asserted when the GPIO pin changes
states.
 ‘1’ (default) - When configured as a GPIO input, the ALERT pin is not asserted when the GPIO pin
changes states.
Bit 2 - GPIO_IN - Mirrors the pin state of the GPIO pin. This bit is read only and the GPIO Status bit
is set when the GPIO is configured as an input and this bit changes state.
Bit 1 - GPIO_OUT - Determines the output state of the GPIO pin when configured as an output. When
the GPIO pin is configured as an input, this bit is ignored.
 ‘0’ (default) - The GPIO pin state is low.
 ‘1’ - The GPIO pin state is high.
Bit 0 - GPIO_DIR - Determines the direction of the GPIO pin.
 ‘0’ (default) - The GPIO pin acts as an input.
 ‘1’ - The GPIO pin acts as an output.
58
DATASHEET
DS20005239A