STMPE2401TBR STMicroelectronics, STMPE2401TBR Datasheet - Page 24

• Manufacturer Part Number: STMPE2401TBR
• Description: IC I/O EXPANDER I2C 24B 36TFBGA
• Manufacturer: STMicroelectronics

Specifications of STMPE2401TBR

• Interface: I²C
• Number Of I /o: 24
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-TFBGA
• Includes: Keypad, POR, PWM
• For Use With: 497-6426 - BOARD EVAL BASED ON STMPE2401
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-6133-2

Interrupt system
9.4
24/55
Table 22. IER
Interrupt status register (ISR)
ISR register monitors the status of the interruption from a particular interrupt source to the
host. Regardless whether the IER bits are enabled or not, the ISR bits are still updated.
Table 23. ISR
Reset
Value
R/W
Bit
Bits
8:0
Bits
8:0
15
R
0
Name
IS[x]
14
Name
R
0
IE[x]
13
Interrupt Status (where x = 8 to 0)
Read:
IS0 = Wake-up Interrupt Status
IS1 = Keypad Controller Interrupt Status
IS2 = Keypad Controller FIFO Overflow Interrupt Status
IS3 = Rotator Controller Interrupt Status
IS4 = Rotator Controller Buffer Overflow Interrupt Status
IS5 = PWM Channel 0 Interrupt Status
IS6 = PWM Channel 1 Interrupt Status
IS7= PWM Channel 2 Interrupt Status
IS8 = GPIO Controller Interrupt Status
Write:
A write to a IS[x] bit with a value of ‘1’ will clear the interrupt and a write with a
value of ‘0’ has no effect on the IS[x] bit.
Reserved
R
0
Interrupt Enable Mask (where x = 8 to 0)
IE0 = Wake-up Interrupt Mask
IE1 = Keypad Controller Interrupt Mask
IE2 = Keypad Controller FIFO Overflow Interrupt Mask
IE3 = Rotator Controller Interrupt Mask
IE4 = Rotator Controller Buffer Overflow Interrupt Mask
IE5 = PWM Channel 0 Interrupt Mask
IE6 = PWM Channel 1 Interrupt Mask
IE7 = PWM Channel 2 Interrupt Mask
IE8 = GPIO Controller Interrupt Mask
Writing a ‘1’ to the IE[x] bit will enable the interruption to the host.
ISR_msb
12
R
0
11
R
0
10
R
0
R
9
0
RW
IS8
8
0
RW
IS7
7
0
Description
Description
RW
IS6
6
0
RW
IS5
5
0
RW
IS4
ISR_lsb
4
0
RW
IS3
3
0
RW
IS2
2
0
STMPE2401
RW
IS1
1
0
RW
IS0
0
0