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AT83C24 데이터시트 PDF




ATMEL Corporation에서 제조한 전자 부품 AT83C24은 전자 산업 및 응용 분야에서
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PDF 형식의 AT83C24 자료 제공

부품번호 AT83C24 기능
기능 Smart Card Reader Interface with Power Management
제조업체 ATMEL Corporation
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AT83C24 데이터시트, 핀배열, 회로
Features
Smart Card Interface
– Compliance with ISO 7816, EMV2000, GIE-CB, GSM and WHQL Standards
Card Clock Stop High or Low for Card Power-down Modes
Support Synchronous Cards with C4 and C8 Contacts
Card Detection and Automatic de-activation Sequence
Programmable Activation Sequence
– Direct Connection to the Smart Card
Logic Level Shifters
Short Circuit Current Limitation (see electrical characteristics)
8kV+ ESD Protection (MIL/STD 883 Class 3)
– Programmable Voltage
5V ±5% at 65 mA (Class A)
3V ±0.2V at 65 mA (Class B)
1.8V ±0.14V at 40 mA
– Low Ripple Noise: < 200 mV
Versatile Host Interface
– ICAM (Conditional Access) Compatible
– Two Wire Interface (TWI) Link
Programmable Address Allow up to 8 Devices
– Programmable Interrupt Output
– Automatic Level Shifter (1.6V to VCC)
Reset Output Includes
– Power-On Reset (POR)
– Power-Fail Detector (PFD)
High-efficiency Step-up Converter: 80 to 98% Efficiency
Extended Voltage Operation: 3V to 5.5V
Low Power Consumption
– 180 mA Maximum In-rush Current
– 30 µA Typical Power-down Current (without Smart Card)
4 to 48 MHz Clock Input, 7 MHz Min for Step-up Converter (for AT83C24)
18 to 48MHz Clock input (for AT83C24NDS)
Industrial Temperature Range: -40 to +85°C
Packages: SO28 and QFN28
Smart Card
Reader
Interface with
Power
Management
AT83C24
AT83C24NDS
Description
The AT83C24 is a smart card reader interface IC for smart card reader/writer applica-
tions such as EFT/POS terminals and set top boxes. It enables the management of
any type of smart card from any kind of host. Up to 8 AT83C24 can be connected in
parallel using the programmable TWI address.
Its high efficiency DC/DC converter, low quiescent current in standby mode makes it
particularly suited to low power and portable applications. The reduced bill of material
allows reducing significantly the system cost. A sophisticated protection system guar-
antees timely and controlled shutdown upon error conditions.
The AT83C24NDS is a dedicated version approved by NDS for use with NDS Video-
Guard conditional access software in set-top boxes. All AT83C24 datasheet is
applicable to AT83C24NDS. The main differences between AT83C24 and
AT83C24NDS are listed below:
1/ CLASS A card supplied with CVCC = 4.75 to 5.25V for AT83C24NDS,
CLASS A card supplied with CVCC = 4.6 to 5.25V for AT83C24
2/ 18MHz minimum on input clock for AT83C24NDS
3/ Up to 10µF for capacitor connected on CVCC pin for AT83C24,
3.3µF mandatory for AT83C24NDS
4234E–SCR–09/04
1




AT83C24 pdf, 반도체, 판매, 대치품
Table 1. Ports Description (Continued)
Pad Name
Pad Internal
Power Supply
ESD
Limits
Pad
Type Description
SDA
VCC
3 kV
I/O
open-
drain
Microcontroller Interface Function
TWI serial data
3 kV
I/O Microcontroller Interface Function
SCL VCC
open-
drain
TWI serial clock
Microcontroller Interface Function
Copy of CIO pin and high level reference for EVCC.
3 kV
I/O EVCC
I/O An external pull up to EVCC is needed on IO pin.
I/O is the reference level for EVCC if EVCC is connected to a capacitor.
This feature is unused if EVCC is connected to VCC.
3 kV
I/O Microcontroller Interface Function
C4 EVCC
(pull-up) Copy of Card CC4.
3 kV
I/O Microcontroller Interface Function
C8 EVCC
(pull-up) Copy of Card CC8.
3 kV
Microcontroller Interface Function
CLK EVCC
I
Master Clock
I/O Smart card interface function
CIO
CVCC
8 kV+
(pull-up) Card I/O
CC4
CVCC
8 kV+
I/O Smart card interface function
(pull-up) Card C4
CC8
CVCC
8 kV+
I/O Smart card interface function
(pull-up) Card C8
CPRES
VCC
8 kV+
I
(pull-up)
Smart card interface function
Card presence
An internal Pull-up to VCC can be activated in the pad if necessary using PULLUP bit
(CONFIG1 register).
CCLK
CVCC
8 kV+
Smart card interface function
O
Card clock
CRST
CVCC
8 kV+
Smart card interface function
O
Card reset
CMDVCC
EVCC
3 kV+
I
Microcontroller Interface Function:
(pull-up)
Activation/Shutdown of the smart card Interface.
VCC
LI
3 kV+
3 kV+
PWR
PWR
Supply Voltage
VCC is used to power the internal voltage regulators and I/O buffers.
DC/DC Input
LI must be tied to VCC pin through an external coil (typically 4.7 µH) and provides the
current for the charge pump of the DC/DC converter.
It may be directly connected to VCC if the step-up converter is not used (see STEPREG
bit in CONFIG4 register and see minimum VCC values in Table 20 (class A) and
Table 21 (class B)).
4 AT83C24
4234E–SCR–09/04

4페이지










AT83C24 전자부품, 판매, 대치품
Address Byte
AT83C24
The first byte to send to the device is the address byte. The device controls if the hard-
ware address (A2/CK, A1/RST, A0/3V pins on reset) corresponds to the address given
in the address byte (A2, A1, A0 bits).
If the level is not stable on A2/CK pin (or A1/RST pin, or A0/3V pin) at reset, the user
has to send the commands to the possible address taken by the device.
If A2/CK to A0/3V are tied to the host microcontroller and their reset values are
unknown, a general call on the TWI bus allows to reset all the AT83C24 devices and set
their address after A2/CK to A0/3V are fixed.
Figure 2. Address Byte
b7 b6 b5 b4 b3 b2 b1 b0
0 1 0 0 A2 A1 A0 R/W
Slave Address on 7 Bits
1 for READ Command
0 for WRITE Command
Up to 8 devices can be connected on the same TWI bus. Each device is configured with
a different combination on A2/CK, A1/RST, A0/3V pins. The corresponding address
byte values for read/write operations are listed below.
Table 2. Address Byte Values
A2
(A2/CK pin)
A1
(A1/RST pin)
00
00
01
01
10
10
11
11
A0
(A0/3V pin)
0
1
0
1
0
1
0
1
Address Byte
for
Read
Command
0x41
0x43
0x45
0x47
0x49
0x4B
0x4D
0x4F
Address Byte
for
Write
Command
0x40
0x42
0x44
0x46
0x48
0x4A
0x4C
0x4E
4234E–SCR–09/04
7

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