STEVAL-TCS003V1 STMicroelectronics, STEVAL-TCS003V1 Datasheet - Page 39

• Manufacturer Part Number: STEVAL-TCS003V1
• Description: BOARD DEMO EXPANDER STMPE2403
• Manufacturer: STMicroelectronics

Specifications of STEVAL-TCS003V1

• Main Purpose: Interface, GPIO Expander
• Embedded: No
• Utilized Ic / Part: STMPE2403
• Primary Attributes: 8/16/24-Bit 24-Port GPIO Expander over I2C
• Secondary Attributes: 3 8-Bit PWM Output for LEDs, Keyboard Matrix Scan, Special Key Support
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8206

STMPE2403
10.5
STMPE2401 Pin Compatibility Register (COMPAT2401)
STMPE2403 is an enhanced version of the other port expander device, STMPE2401.
However, the pin configuration of STMPE2403 is different from that of STMPE2401. For
backward pin compatibility to STMPE2401, COMPAT2401 register provides a control bit that
allows STMPEE2403 to have the same pin configuration as in STMPE2401.
Table 37. Bit description
The pin locations for the following eight IO ports are different from those shown in section
1.3: KP_X0, KP_X1, KP_X2, KP_X3, KP_Y4, KP_Y5, KP_Y6 and KP_Y7. When ‘PIN2401’
bit is set to ‘1’, the eight IO ports are assigned to the pin locations as defined by the following
diagram.
Table 38. Pin location
Reset
Value
Bits
1
2
3
4
5
6
R/W
0
Bit
PIN240
Name
KP_X2
KP_X4
KP_X6
KP_Y5
KP_Y4
VCC1
1
R
7
0
A
This control bit selects pin configuration to be used.
‘0’ – STMPE2401 pin configuration as defined in sections 1.1 and 1.3.
‘1’ – Pin configuration compatible to STMPE2401.
R
6
0
KP_X1
KP_X3
KP_X5
KP_X7
KP_Y3
KP_Y2
B
R
5
0
RESET
KP_X0
KP_Y1
KP_Y0
RESERVED
GND1
GND3
C
COMPAT2401
R
4
0
Description
XTALOUT
XTALIN
ADDR0
KP_Y9
GND2
GND4
R
3
0
D
R
2
0
KP_Y10
PWM-1
PWM-3
SDATA
KP_Y8
SCLK
E
GPIO controller
R
1
0
KP_Y11
PWM-2
KP_Y6
KP_Y7
VCC2
PIN2401
INT
F
RW
0
0
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