STMPE2403TBR STMicroelectronics, STMPE2403TBR Datasheet - Page 58

• 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

Miscellaneous features
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Miscellaneous features
Reset
STMPE2403 is equipped with an internal POR circuit that holds the device in reset state,
until the clock is steady and VCC input is valid. Host system may choose to reset the
STMPE2403 by asserting Reset_N pin.
Under Voltage Lockout
STMPE2403 is equipped with an internal UVLO circuit that generates a RESET signal,
when the main supply voltage falls below the allowed threshold.
Clock output
STMPE2403 provides a buffered 32KHz clock output at one of the GPIO as alternate
function. This clock could be used for cascading of multiple port expander devices, using
just 1 XTAL unit.
Crystal oscillator
STMPE2403 provides the option to use a crystal oscillator to provide the 32KHz clock.
Figure 14. Recommended schematics if external XTAL is used
S T M P E 2403
X TA L O U T
X TA L IN
32K H z
27pF
27pF
G N D
STMPE2403