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PINOUT (265)
System clock
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System clock
T14 gpio_a[2] U I/O 4 0 addr[26]
1 Reserved 1 cs0_we_n
2 Ext Int Ch 2 (dup)
3 gpio_a[2], SPI boot
P12 gpio_a[3] U I/O 4 0 addr[27]
1 Reserved 1 cs0_oe_n
2 UART ref clock
3 gpio_a[3], Endian
a. There is a possible conflict when gpio12 is used as the I2C_SDA signal. in this case the I2C_SDA signal is driven low
while in reset, then driven active high after end of reset, until software configures this pin for the I2C function.
Pin Signal U/D I/O OD Description
Pin Signal U/D I/O OD Description
L16 x1_sys_osc I System oscillator circuit in
L17 x2_sys_osc O System oscillator circuit out
M15 sys_pll_dvdd P PLL clean power
M16 sys_pll_dvss P PLL clean ground
P2 x1_rtc_osc I RTC oscillator circuit in (32.768 KHz)
R2 x2_rtc_osc O RTC oscillator circuit out