ADP5588 Analog Devices, ADP5588 Datasheet - Page 22

• Manufacturer Part Number: ADP5588
• Description: Mobile I/O Expander and QWERTY Keypad Controller
• Manufacturer: Analog Devices

Specifications of ADP5588

• Vin Range: 1.8 to 3.0V
• Number Of I/os: 16
• Application: Mobil I-0 Exp-Keybd Cont,Mobil I-O Expander
• Qwerty Keypad: Yes
• Other Functions: I2C I/O
• Function Flag: Mobil I-O
• Package: 24-Lead LFCSP

ADP5588
Table 39. CMP_CONFG_SENS2—Register 0x32 (Sensor 2 Comparator Configuration Register)
Field
FILT (2-0)
FORCE_RD
L3_EN
L2_EN
1
Table 40. CMP1_LVL2_TRIP—Register 0x33 (L2 Light Sensor Reference Level (Output Falling for Sensor 1)
Field
L2_T7 to L2_T0
Table 41. CMP1_LVL2_HYS—Register 0x34 (L2 Light Sensor Hysteresis (Active When Output Rising) for Sensor 1)
Field
L2_H7 to L2_H0
Table 42. CMP1_LVL3_TRIP—Register 0x35 (L3 Light Sensor Reference Level (Output Falling for Sensor 1)
Field
L3_T7 to L3_T0
Table 43. CMP1_LVL3_HYS—Register 0x36 (L3 Light Sensor Hysteresis (Active When Output Rising) for Sensor 1)
Field
L3_H
When the software forces a conversion, the state machine clears the forced bit after the conversion is complete and the proper registers have been updated.
Bit
[7:6]
[5:3]
2
1
0
Bit
[7:0]
Bit
[7:0]
Bit
[7:0]
Bit
[7:0]
Description
Not used.
Programs the number of consecutive measurements required to transition the L2 and L3 levels.
FILT
000
001
010
011
100
101
110
111
1: Forces a read of the light sensor; reset by the internal state machine after conversion is complete and
L2_OUT and L3_OUT are valid.
1: Enables the L3 comparator for Sensor 2 input.
0: Disables the L3 comparator for Sensor 2 input.
1: Enables the L3 comparator for Sensor 2 input.
0: Disables the L3 comparator for Sensor 2 input.
Note that the L3 comparator has priority over the L2 comparator.
Description
Sensor 1 comparator Level 3 (Dark) hysteresis. If the comparator input is above L3_TRP + L3_HYS, the
comparator trips and enters Level 2 (office) mode and L3_OUT is cleared. The programmable range is from
0 μA to 127.5 μA (0 lux to 318.75 lux) in steps of 0.5 μA.
Description
Sensor 1 comparator Level 3 (Dark) reference. If the comparator input is below L3_TRP, the comparator trips
and enters Level 3 (dark) mode and L3_OUT is set. The programmable range is from 0 μA to 127.5 μA (0 lux to
318.75 lux) in steps of 0.5 μA.
Description
Sensor 1 comparator Level 2 (Office) reference. If the comparator input is below this trip point, the
comparator trips and enters Level 2 (office) mode and L2_OUT is set. The programmable range is from 0 μA
to 1000 μA (0 lux to 2550 lux) in steps of 4 μA.
Description
Sensor 1 comparator Level 2 (Office) hysteresis. If the comparator input is above L2_TRP + L2_HYS, the
comparator trips and enters Level 1 (outdoor) mode and L2_OUT is cleared. The programmable range is from
0 μA to 1000 μA (0 lux to 2550 lux) in steps of 4 μA.
1
Number Required
1
2
4
8
16
32
64
128
Rev. C | Page 22 of 28
Approximate Time (sec)
0.08
0.16
0.32
0.64
1.28
2.56
5.12
10.24
Data Sheet