STMPE812ABJR STMicroelectronics, STMPE812ABJR Datasheet - Page 22

• Manufacturer Part Number: STMPE812ABJR
• Description: Touch Screen Converters & Controllers Touchscreen cntrlr S-Touch
• Manufacturer: STMicroelectronics
• Type: Resistive Touch Controllersr

Specifications of STMPE812ABJR

• Rohs: yes
• Input Type: 1 TSC
• Data Rate: 400 kbps
• Resolution: 12 bit
• Interface Type: 4-wire, I2C
• Supply Voltage: 1.65 V to 3.6 V
• Supply Current: 100 uA
• Operating Temperature: - 40 C to + 85 C
• Package / Case: CSP-12
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.65 V

Interrupt system
INT_CTRL
Address:
Type:
Reset:
Description:
22/53
INT_MODE
7
0
[6:3] RESERVED
[7] INT_MODE:
[2] INT_ POLARITY:
[1] INT_TYPE:
[0] GLOBAL_INT:
6
0x08
R/W
0x00
This register is used to enable the interruption from a system related interrupt source
to the host.
‘0’ for Pen-Down INT mode (INT pin asserted as long as pen down detected). Nothing can de-
assert the INT pin as long as PEN is down. TSC_TOUCH in INT_EN register must be enabled
for PEN_DOWN interrupt to operate.
If any other interrupt sources are enabled, the INT output is:
PEN_STATUS OR OTHER_INT
INT_E setting is not required for PEN-DOWN mode. It is recommended Pen-Down INT mode
enabled in applications where GPIO/ADC/PWM functions or interrupts are not in used, such
that the INT pin signal provides the exclusive indication for pen down and pen up.
‘1’ for normal INT mode (INT pin asserted if any bit in INT STATUS REGISTER is set)
When INT_MODE is changed, all interrupt status are cleared. Pending INT output (if any) is
cleared too.
‘1’ for active high/rising edge
‘0’ for active low/falling edge
Interrupt pin should be pulled to V
high” polarity is used.
‘1’ for edge interrupt (pulse width = 50-150 µs)
‘0’ for level interrupt
Edge interrupt does not work in PEN_DOWN INT mode
This bit is ignored in PEN_DOWN INT mode.
‘1’ allows global interrupt
‘0’ stops all interrupt
This bit overwrites INT_MODE: If global_int is stop (in pen down INT_MODE), even pen down
does not generate an interrupt.
5
RESERVED
0
4
Doc ID 18225 Rev 4
CC
3
if “active low” polarity is used, and pulled to GND if “active
INT_POLARITY
2
0
Interrupt control register
INT_TYPE
1
0
STMPE812A
GLOBAL_INT
0
0