Data Sheet
AC6921A Datasheet
5
Confidential
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1.2 Pin Description
Table 1-1 AC6921A_LQFP48 Pin Description
PIN
NO.
Name
I/O
Type
High
Drive
(mA)
Function Other Function
1 PB0 I/O
8
GPIO
CLKOUT0:
UART1TXA:Uart1 Data Out(A);
SPI2CLKA:SPI2 Clock(A);
SD1DAT0B:SD1 Data0(B);
ALNK_SCLKB:Audio Link Serial
Clock (B);
SD0DAT3B:SD0 Data3(B);
ADC6:ADC Input Channel 6;
Touch0:Touch Input Channel 0;
2 VSSIO P / Ground
3 VBAT P / LDO Power
4 RTCVDD P / RTC Power 3.3v
5 PR1 I/O 10
RTCIO1
(output 0V)
RESET1:
ADC12:ADC Input Channel 12;
6 PR2 I/O 10
RTCIO2
(pull up)
RESET2:
ADC12:ADC Input Channel 12;
7 PR3 I/O 10
RTCIO3
(pull up)
RESET3:
8 PR0 I/O 10 RTCIO0
RESET0:
OSCO_32K
9 BT_AVDD P / BT Power 1.3v
10 BT_RF P /
11 FMIP I /
12 VSSIO P / Ground
13 BT_OSCI I / BT OSC In
14 BT_OSCO O / BT OSC Out
15 PC5 I/O
24
GPIO
SD1CLKA:SD1 Clock(A);
SPI1DOB:SPI1 Data Out(B);
UART2RXD:Uart2 Data In(B);
IIC_SDA_B:IIC SDA(B);
COM0:LCD COM Output 0;
SEG21:LCD SEG Output21;
16 PC4 I/O
24
GPIO
SD1CMDA:SD1 Command(A);
SPI1CLKB:SPI1 Clock(B);