參數(shù)資料
型號(hào): 73S1217F-68MR/F/PE
廠商: Maxim Integrated Products
文件頁數(shù): 2/140頁
文件大?。?/td> 0K
描述: IC SOC SMART CARD READER 68QFN
標(biāo)準(zhǔn)包裝: 2,500
系列: *
73S1217F Data Sheet
DS_1217F_002
Pin Name
Pin
(68
QFN)
Type
Equivalent
Circuit*
Description
OFF_REQ
52
O
Digital output. If ON_OFF switch is closed (to ground) for de-
bounce duration and circuit is “on,” OFF_REQ will go high
(Request to turn OFF). This output should be connected to
an interrupt pin to signal the CPU core that a request to shut
down power has been initiated. The firmware can then
perform all of its shut down housekeeping duties before
shutting down VDD.
TBUS(3:0)0
1
2
3
50
46
44
41
IO
Trace bus signals for ICE.
RXTX
43
IO
ICE control.
ERST
38
IO
ICE control.
ISBR
3
IO
ICE control.
TCLK
39
I
ICE control.
ANA_IN
15
AI
Analog input pin. This signal goes to a programmable
comparator and is used to sense the value of an external
voltage.
LED0
4
IO
Special output driver, programmable pull-down current to
drive LED. May also be used as an input.
SEC
2
I
Input pin for use in programming security fuse. It should be
connected to ground when not in use.
TEST
51
DI
Test pin, should be connected to ground.
VDD
68
28
40
PSO
VDD supply output pin. A 0.1μF capacitor is recommended at
each VDD pin.
GND
9
25
42
67
GND
General ground supply pins for all IO and logic circuits.
RESET
1
I
Reset input, positive assertion. Resets logic and registers to
default condition. Note: to insure proper reset operation after
VDD is turned on by application of VBUS power or activation of
the ON/OFF switch, external reset circuitry must generate a
proper reset signal to the 73S1217F. This can be
accomplished via a simple RC network.
* See the figures in the Equivalent Circuits section.
10
Rev. 1.2
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