73S8009C Maxim, 73S8009C Datasheet - Page 3

• Manufacturer Part Number: 73S8009C
• Description: The 73S8009C is a versatile power management and single smart card interface circuit that is ideally suited for smart card reader products that are battery- and/or USB bus-powered
• Manufacturer: Maxim

73S8009C Data Sheet
FUNCTIONAL DIAGRAM
Rev. 1.5
CMDVCC5
CMDVCC3
AUX1UC
AUX2UC
OFF_REQ
OFF_ACK
ON_OFF
I/OUC
RSTIN
CLKIN
OFF
RDY
11
24
32
9
4
8
6
7
2
3
5
1
CS
12
CONTROL
LOGIC
TEST1
OSC.
R-C
Figure 1: 73S8009C Block Diagram
GND
10
Pin numbers reference the QFN32 package.
1.5MHz
28
TEST2
30
SMART CARD I/O BUFFERS
REFERENCE
VOLTAGE
AND SIGNAL LOGIC
VCC FAULT
VPC FAULT
VCC OK
VCC = 5
VCC = 3
ON/OFF
POWER DOWN
bias currents
vref
VDD
29
SWITCH/LDO
REGULATOR
VBAT
S2
25
BUFFER
BUFFER
CLOCK
RESET
VBUS
S1
23
DS_8009C_025
19
14
15
26
17
18
16
13
27
22
21
20
VP
VPC
LIN
RST
CLK
AUX2
GND
VCC
PRES
PRES
I/O
AUX1
3