AT89C5122 ATMEL [ATMEL Corporation], AT89C5122 Datasheet - Page 65
AT89C5122
Manufacturer Part Number
AT89C5122
Description
MICROCONTROLLER WITH USB AND SMART CARD READER INTERFACES
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT89C5122.pdf
(213 pages)
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Block Diagram
Definitions
Terminal and ICC
ETU
T=0
T=1
Activation: Cold Reset
Activation: Warm Reset
De-Activation
4202D–SCR–06/05
The Smart Card Interface Block diagram is shown Figure 30:
Figure 30. SCIB Block Diagram
This paragraph introduces some of the terms used in ISO 7816-3 and EMV recommen-
dations. Please refer to the full recommendations for a complete list of terms.
Terminal is the reader, ICC is the Integrated Circuit Card
Elementary Timing Unit (Bit time)
Character oriented half duplex protocol T=0
Block oriented half duplex protocol T=1
Reset initiated by the Terminal with Vcc power-up. The card will answer with ATR (see
below)
Reset initiated by the Terminal with Vcc already powered-up, and after a prior ATR or
Warm Reset
Deactivation by the Terminal as a result of : unresponsive ICC, or ICC removal.
Clk_iso
Clk_cpu
INT
Waiting time counter
Guard time counter
Etu counter
Interrupt generator
SCI Registers
Barrel shifter
Scart
fsm
Power off
Power on
fsm
I/O
mux
IO (in)
IO (out)
CLK
RST
C4 (out)
C8 (out)
C4 (in)
C8 (in)
VCARD
65
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