STMPE1601 STMicroelectronics, STMPE1601 Datasheet - Page 33

• Manufacturer Part Number: STMPE1601
• Description: 16-bit Enhanced Port Expander With Keypad And Pwm Controller Xpander Logic
• Manufacturer: STMicroelectronics

STMPE1601
10.3
Level translator feature
Figure 7.
When enabled, the GPIO 0-7 bits are internally mapped to GPIO 8-15 bits. The
STMPE1601 becomes an 8-channel level translator where each of the channels may have
its direction set individually. As GPIO 0-7 operates from Vcc, and GPIO 8-15 operates from
Vio, this allows the 2 groups of GPIO to work as a level translator.
Warning:
Level translator feature
When the level translator feature is enabled, the “Set pin”,
“Clear pin” and “Set direction” bits in the corresponding
registers will be ignored. However, the “Monitor pin”, “Edge
detect”, “Pull-up” features are still available in the GPIOs
used as level translator.
GPIO
0-7
Direction
enable
&
GPIO
8-15
GPIO controller
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