MCP201-I/SN Microchip Technology, MCP201-I/SN Datasheet - Page 4

• Manufacturer Part Number: MCP201-I/SN
• Description: IC LIN TXRX ON-BOARD VREG 8SOIC
• Manufacturer: Microchip Technology
• Type: Line Transceiverr

Specifications of MCP201-I/SN

• Package / Case: 8-SOIC (3.9mm Width)
• Number Of Drivers/receivers: 1/1
• Protocol: LIN
• Voltage - Supply: 6 V ~ 18 V
• Mounting Type: Surface Mount
• Operating Supply Voltage: 18 V
• Mounting Style: SMD/SMT
• Supply Current: 1 mA
• Output Voltage: 5V
• Output Current: 50mA
• Supply Voltage Range: 6V To 18V
• Baud Rate: 20Kbaud
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Leaded Process Compatible: Yes
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP201
1.3
For an overview of all operational modes, please refer
to Table 1-2.
1.3.1
In the Power-down mode, the transmitter and the
voltage regulator are both off. Only the receiver section
and the CS/WAKE pin wake-up circuits are in
operation. This is the lowest power mode.
If any bus activity (e.g., a BREAK character) should
occur during Power-down mode, the device will
immediately enable the voltage regulator. Once the
output has stabilized, the device will enter Ready
mode.
The part will enter the operation mode, if the CS/WAKE
pin should become active-high (‘1’).
1.3.2
There are two states for the Ready mode. The only
difference between these states is the transition during
start-up. The state Ready1 mode ensures that the
transition from Ready to Operation mode (once a rising
edge of CS/WAKE) occurs without disrupting bus
traffic.
Immediately upon entering either Ready1 or Ready
mode, the voltage regulator will turn on and provide
power. The transmitter portion of the circuit is off, with
all other circuits (including the receiver) of the MCP201
being fully operational. The LIN pin is kept in a
recessive state.
If a microcontroller is being driven by the voltage
regulator output, it will go through a power-on reset and
initialization sequence. All other circuits, other than the
transmitter, are fully operational. The LIN pin is held in
the recessive state.
The device will stay in Ready mode until the CS/WAKE
pin transitions high (‘1’). After CS/WAKE is active, the
transmitter is enabled and the device enters Operation
mode.
The device may only enter Power-down mode after
going through the Operation mode step.
At power-on of the V
in either Ready or Ready1 mode, waiting for a
CS/WAKE rising edge.
The MCP201 will stay in either mode for 600 µs as the
regulator powers its internal circuitry and waits until the
CS/WAKE pin transitions high. During the 600 µs
delay, the MCP201 will not recognize a CS/WAKE
event. The CS/WAKE transition from low to high should
not occur until after this delay.
DS21730D-page 4
Modes of Operation
POWER-DOWN MODE
READY AND READY1 MODES
BAT
supply pin, the component is
1.3.3
In this mode, all internal modules are operational.
The MCP201 will go into Power-down mode on the
falling edge of CS/WAKE.
FIGURE 1-1:
CS/WAKE = true
Note:
Operation
Mode
OPERATION MODE
While the MCP201 is in shutdown, TXD
should not be actively driven high. If TXD
is driven high actively, it may power
internal logic.
CS/WAKE = false
Ready1
Power-down
Mode
CS/WAKE = true
Mode
OPERATIONAL MODES
STATE DIAGRAMS
 2004 Microchip Technology Inc.
CS/WAKE = false
CS/WAKE = true
Ready
Mode
Bus Activity
Start
POR