AT83C26-ZTUL Atmel, AT83C26-ZTUL Datasheet - Page 11
![IC SMART CARD READER 1/PM 48-QFN](/photos/7/34/73471/48-vqfn-6_543-5130_01-4_sml.jpg)
AT83C26-ZTUL
Manufacturer Part Number
AT83C26-ZTUL
Description
IC SMART CARD READER 1/PM 48-QFN
Manufacturer
Atmel
Datasheet
1.AT83C26-ALTUL.pdf
(77 pages)
Specifications of AT83C26-ZTUL
Controller Type
Smart Card Reader Interface
Interface
2-Wire
Voltage - Supply
3 V ~ 5.5 V
Current - Supply
65mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
For Use With
AT89STK-09 - EVAL BOARD FOR AT83C26
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Address Byte
7511D–SCR–02/07
The first byte to send to the device is the address byte. The device controls if the hardware
address (A2/CK, A1/RST pins on reset) corresponds to the address given in the address byte
(A2, A1 bits).
If the level is not stable on A2/CK pin at reset, the user has to manage the possible address
taken by the device.
Up to 4 devices can be connected on the same TWI bus. Each device is configured with a differ-
ent combination on A2/CK, A1/RST pins. The address byte of each device for read/write
operations are listed below.
Table 2. Address Byte Values
Figure 1. Data transfer on TWI bus
Figure 2. Address Byte
(A2/CK pin)
A2
0
0
1
1
SDA
SCL
start condition
(A1/RST pin)
b7
0
Slave Address on 7 Bits
A1
0
1
0
1
1
b6
1
2
b5
0
Address byte
3
Address Byte
b4
0
Command
4
Read
0x4B
0x4F
0x47
0x43
for
A2
b3
5
6
b2
A1
1 for READ Command
0 for WRITE Command
7
b1
acknowledgement
from slave
Address Byte
1
8
Command
Write
0x4A
0x4E
0x42
0x46
R/W
b0
for
9
command
and/or data
stop condition
AT83C26
11
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