MC33560DTBR2G ON Semiconductor, MC33560DTBR2G Datasheet - Page 13

• Manufacturer Part Number: MC33560DTBR2G
• Description: IC INTERFACE PWR MANAGMT 24TSSOP
• Manufacturer: ON Semiconductor

Specifications of MC33560DTBR2G

• Applications: *
• Interface: *
• Voltage - Supply: *
• Package / Case: 24-TSSOP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MC33560DTBR2GOS

OPERATING MODES
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•
•
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Figure 21 above.
STANDBY MODE
insertion and monitor the power supply while keeping the
power consumption at a minimum. It is obtained with
CS = H and PWRON = L.
wake up the Microcontroller.
PROGRAMMING MODE
card V
application. The card supply, CRDV
to 3 V or 5 V, and the card clock signal can be defined to be
either synchronous, or asynchronous divided by 1, 2 or 4.
followed by a negative transition on CS. The programming
options are shown in Table 3. Programmed values are
latched on a positive transition of CS with RDYMOD = L.
ACTIVE MODE
pin becomes an output, and the MC33560 status can be
polled. Power is not applied to the card.
CS = L and reading the RDYMOD pin.
converter by asserting PWRON=H. This starts the
automatic power on sequence: when CRDV
undervoltage level (V
programming), the card sequencer validates CRDIO,
CRDRST, CRDCLK, CRDC4, CRDC8 pins according to
the ISO7816−3 sequence (Figure 26). The MC33560 is now
in transaction mode, and the system is ready for data
exchange via the three I/O lines and the RESET line.
The MC33560 has five operating modes:
The transitions between these different states are shown in
Standby mode allows the MC33560 to detect card
When the MC33560 detects a card, INT is asserted low to
The programming mode allows the user to configure the
Programming mode is obtained with RDYMOD = L
In active mode, the MC33560 is selected, the RDYMOD
The microcontroller polls the MC33560 by asserting
If a card is present, the microcontroller starts the DC−DC
Standby
Programming
Active
Transaction
Idle
CS: FALLING EDGE
RDYMOD: 0 AND
CC
PROGRAMMING MODE
and the card clock signal for his specific
STAND BY MODE
RDYMOD = L
PWRON = L
CS = H
CS = L
RDYMOD: RISING EDGE
CS: 1 AND
T5H
CS: FALLING EDGE
CS: RISING EDGE
or V
CC
T3H
, can be programmed
, depending on
PWRON: RISING EDGE
Figure 21. MC33560 Operating Modes
ACTIVE MODE
PWRON = L
CC
ISO START SEQUENCE
CS: 0 AND
CS = L
reaches the
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MC33560
13
TRANSACTION MODE
the selected clock signal applied to the card, and the levels
of the I/O, RESET, C4 and C8 signals between the
microcontroller and the card are translated depending on the
supply voltages V
RDYMOD pin.
IDLE MODE
without communicating with it. When an asynchronous
clock is used, the selected clock signal is applied to the card.
POWERDOWN OPERATION
microprocessor, by stopping the DC−DC converter with
PWRON = L while CS = L, or by the MC33560 itself when
an error condition has been detected (CRDV
undervoltage, overcurrent longer than 160 ms typ.,
overtemperature,
communication session is terminated in a given sequence
defined in ISO7816−3.
status can be polled.
(
FUNCTIONAL BLOCKS
CARD DETECTOR
insertion and extraction), filters the incoming waveform and
generates an interrupt signal INT after each change. In order
to identify which coupler activated the INT line
(multicoupler application) the microcontroller scans both
circuits via CS and reads the RDYMOD pin.
which type of mechanical contact is implemented (normally
open or normally closed). Special care is taken to hold the
current consumption very low on this part of the circuit
which is continuously powered by the V
external resistor must be connected to pullup or pulldown,
depending on CRDCON. This resistor is chosen according to
the maximum leakage current of the card connector and the
PCB.
PWRON: FALLING EDGE
OR ERROR CONDITION
CS
ISO STOP SEQUENCE
TRANSACTION MODE
In transaction mode, the MC33560 maintains power and
The DC−DC converter status can be monitored on the
Idle mode is used when maintaining a card powered up
Powerdown can be initiated by the controlling
The MC33560 then goes into active mode, in which its
Standby mode is reached by deselecting the MC33560
This block monitors the card contact CRDDET (during
The programming input CRDCON tells the level detector
The CRDDET pin has high impedance input, and an
=
PWRON = H
H).
CS = L
BAT
CONDITION
ERROR
“hot”
and V
CC
CS: FALLING EDGE
RDYMOD: 0 AND
card
.
PROGRAMMING MODE
PWRON = H
IDLE MODE
RDYMOD = L
CS = H
RDYMOD: RISING EDGE
extraction).
CS = L
BAT
CS: 1 AND
supply.
The
CC