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CXD4000R Datasheet

  • CXD4000R

  • Fingerprint Verification System LSI

  • 14頁

  • ETC

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CXD4000R
Fingerprint Verification System LSI
Description
The CXD4000R is an IC that inputs the signal from
a Sony fingerprint sensor and performs fingerprint
verification.
This chip integrates a CPU, A/D converter, DRAM,
USB controller and other circuits.
Features
鈥?Combination with a Sony fingerprint sensor and a
flash memory realizes a fingerprint verification
system with a 3-chip configuration
鈥?16-bit microcomputer SPC970
鈥?USB controller (conforms to Rev 1.1)
Fingerprint Verification Block
鈥?Adoption of Sony's original verification algorithm
also provides excellent results for blurred and
deformed fingerprints
鈥?False rejection ratio: 1% or less, false acceptance
ratio: 0.1% or less (with 2 trials)
鈥?Verification time per finger: approximately 40ms
(Clock frequency: 48MHz, excluding fingerprint
image loading time)
Microcomputer Block
鈥?CPU: SPC970 series 16-bit CPU core
鈥?Internal RAM: 4K bytes
鈥?External flash memory: 16-bit, 2M bytes
鈥?External expansion SRAM: 8-bit/16-bit, 2M bytes
each
鈥?General purpose register: 16 bits
脳
8 lines
脳
32
banks
鈥?Processing rate: 41.6ns (f
SYS
: 24MHz)
鈥?Peripheral hardware
鈥?Serial interface
脳
1 channel
(Clock synchronous serial interface or
asynchronous serial interface)
鈥?16-bit timer
脳
4 channels
鈥?External memory interface
鈥?8-bit A/D converter (also used as sensor input)
鈥?8-bit D/A converter
脳
1 channel
鈥?General-purpose I/O: 12 (also used as interrupt
inputs, etc.)
USB Controller
鈥?Conforms to Rev 1.1
鈥?USB transceiver circuit
鈥?Supports full-speed (12Mbps)
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
120 pin LQFP (Plastic)
Applications
鈥?Fingerprint verification units (stand-alone)
鈥?Cellular phones
鈥?Personal computers
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings
V
SS
鈥?0.5 to +4.6
V
鈥?Supply voltage V
DD
鈥?Input voltage
V
I
V
SS
鈥?0.5 to V
DD
+ 0.5 V
V
SS
鈥?0.5 to V
DD
+ 0.5 V
鈥?Output voltage V
O
鈥?Storage temperature
Tstg
鈥?5 to +150
擄C
Recommended Operating Conditions
鈥?Supply voltage V
DD
3.0 to 3.6
鈥?Input voltage
V
I
V
SS
to V
DD
鈥?Output voltage V
O
V
SS
to V
DD
鈥?Operating temperature
Topr
0 to +70
I/O Pin Capacitance
鈥?Input pin capacitance
C
I
9 (max.)
鈥?Output pin capacitance C
O
11 (max.)
鈥?I/O pin capacitance
C
I/O
11 (max.)
Note)
Measurement conditions: V
DD
= V
I
= 0V,
f = 1MHz
V
V
V
擄C
pF
pF
pF
鈥?鈥?/div>
E01664-PS

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