ST2201U
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
AVSS2
VOUT3.3
VBUS
VU5_3
VBT6_3
VBTIN
VBT6_5
GND for USB
3.3V regulator output pin; connect a Cap
to AVSS2 pin
5V USB bus-power input pin
Regulator 1 output
Regulator 2 output
Battery input
Regulator 3 output
VBT_GND Connected to GND of battery
OTPKEY
PBK1
SC_DET
SC_VSS
SC_GND
SC_VCC
SC_VDD
SC_RST
SC_RX
SC_IO
SC_CLK
PD3
Dedicated input key to wake up ST2201U
from power-down mode
Reserved, must be connected to VBTIN
Smart card detection pin
GND of smart card function
Smart card GND pin
Smart card 5V power pin
VDD of smart card function
Smart card RESET pin
Smart card Rx pin
Smart card I/O pin
Smart card clock pin
Port D[3]
timer2 output
external edge
trigger
external edge
trigger
49
PD2
Port D[2]
timer1 output
50
PD1
Port D[1]
sc_clk output or external edge
Load2
system source
clock
trigger
external edge
trigger
51
52
53
54
55
56
57
58
59
Ver 0.4
PD0
AVDD
VIN
AVSS
OSCXI
OSCXO
RESETB
XIO
OSCI
Port D[0]
VDD pin of analog module
Voltage input pin of low-voltage-detection
function
GND pin of analog module
32k crystal
32k crystal
/RESET pin
4,6,8MHz crystal connection pin
4,6,8MHz crystal connection pin
Page 5/12
2009/08/17
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
