Hardware+Design V1.07
Table Of Contents
- Revision History
- 1 Introduction
- 2 Package Information
- 3 Application Interface Specification
- 4 RF Specification
- 5 Reliability and Operating Characteristics
- 6 Guide for Production
- Appendix
Smart Machine Smart Decision
Table 18: Pin description
Pin name Pin No. Function
KEYSENSE_N0 28
KEYSENSE_N1 27
KEYSENSE_N2 31
KEYSENSE_N3 32
KEYSENSE_N4 36
Sensing keys
KEYPAD_0 30
KEYPAD_1 29
KEYPAD_2 30
KEYPAD_3 35
KEYPAD_4 34
Driving pads
3.7.2 Application Guide
All keypad pins can be configured for GPIOs. These GPIOs also support interruption operation if used as
input pins. A typical circuit about the keypad (5*5 keypad matrix) is shown in the following figure.
Figure 27: Reference circuit
If these pins are configured for GPIOs, the sequence is listed in the following table.
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