STMPE2403TBR STMicroelectronics, STMPE2403TBR Datasheet - Page 29

• Manufacturer Part Number: STMPE2403TBR
• Description: IC I/O EXPANDER I2C 24B 36TFBGA
• Manufacturer: STMicroelectronics

Specifications of STMPE2403TBR

• 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: 497-8206 - BOARD DEMO EXPANDER STMPE2403
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STMPE2403
9.4
9.5
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 26. Register description
Interrupt Enable GPIO Mask Register (IEGPIOR)
IEGPIOR register is used to enable the interruption from a particular GPIO interrupt source
to the host. The IEG[23:0] bits are the interrupt enable mask bits correspond to the
GPIO[23:0] pins.
Table 27. IEGPIOR register
Table 28. Register description
Reset
Value
IEG[x]
R/W
Name
Bit
IEGPIOR_msb
IEGPIOR _csb
Bits
IEGPIOR _lsb
8:0
ISR_msb
15
R
0
Bit
Interrupt Enable GPIO Mask (where x = 23 to 0)
Writing a ‘1’ to the IE[x] bit will enable the interruption to the host.
14
Name
R
0
IS[x]
13
Reserved
R
0
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.
IEG -15 IEG -14 IEG -13 IEG -12 IEG -11 IEG -10
IEG-23 IEG -22 IEG -21 IEG -20 IEG -19 IEG -18 IEG -17 IEG -16
IEG -7
12
R
0
7
11
R
0
IEG -6
10
R
0
6
R
9
0
IEG -5
RW
IS8
5
8
0
Description
RW
IS7
7
0
IEG -4
Description
4
RW
IS6
6
0
IEG -3
RW
IS5
5
0
3
RW
IS4
4
0
IEG -2
2
RW
IS3
3
0
Interrupt system
IEG -9
IEG -1
RW
IS2
2
0
1
RW
IS1
1
0
ISR_lsb
IEG -8
IEG -0
29/63
0
RW
IS0
0
0