Rainbow Electronics MG260 User Manual
Page 63
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MG260 Product Specification
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2.9.2.4 Keyboard
Row/Column scanning frequency = 200 Hz.
Signal
Pin
I/O
I/O type
Level
Comment
ROW0
33
I/O
CMOS 2.8 V/1X
Internal pull-down resistor
ROW1
35
I/O
CMOS 2.8 V/1X
Internal pull-down resistor
ROW2
37
I/O
CMOS 2.8 V/1X
Internal pull-down resistor
ROW3
39
I/O
CMOS 2.8 V/1X
Internal pull-down resistor
COL0
43
I/O
CMOS 2.8 V/1X
Internal pull-up resistor
COL1
45
I/O
CMOS 2.8 V/1X
Internal pull-up resistor
COL2
47
I/O
CMOS 2.8 V/1X
Internal pull-up resistor
COL3
49
I/O
CMOS 2.8 V/1X
VIL
≤ 0.3 x VCC*
VIH
≥ 0.7 x VCC*
VOL
≤ 0.1V
VOH
≥ 2.7 V
Internal pull-up resistor
*VCC = 2.8 V
2.9.2.5 Status indicators
Signal
Pin
I/O
I/O type
Level
Comment
FLASH_LED
72
O
CMOS
2.8 V/2X
VOL
≤ 0.1V
VOH
≥ 2.7 V
GPS_TIMEPULSE
17
O
CMOS
2.8 V
VOL
≤ 0.1V
VOH
≥ 1.7 V