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MCP2004A 데이터시트 PDF




Microchip에서 제조한 전자 부품 MCP2004A은 전자 산업 및 응용 분야에서
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부품번호 MCP2004A 기능
기능 LIN J2602 Transceiver
제조업체 Microchip
로고 Microchip 로고


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MCP2004A 데이터시트, 핀배열, 회로
MCP2003/4/3A/4A
LIN J2602 Transceiver
Features:
• The MCP2003/2003A and MCP2004/2004A are
compliant with Local Interconnect Network (LIN)
Bus Specifications 1.3, 2.0 and 2.1 and are
compliant to SAE J2602
• Support Baud Rates up to 20 kbaudwith
LIN-Compatible Output Driver
• 43V Load Dump Protected
• Very Low High Electromagnetic Immunity (EMI)
meets Stringent Original Equipment Manufactur-
ers (OEM) Requirements
• Very High Electrostatic Discharge (ESD)
Immunity:
- >20 kV on VBB (IEC 61000-4-2)
- >14 kV on LBUS (IEC 61000-4-2)
• Very High Immunity to RF Disturbances meets
Stringent OEM Requirements
• Wide Supply Voltage, 6.0V-27.0V Continuous
• Extended Temperature Range: -40 to +125°C
• Interface to PIC® MCU EUSART and Standard
USARTs
• LIN Bus Pin:
- Internal pull-up resistor and diode
- Protected against battery shorts
- Protected against loss of ground
- High current drive
• Automatic Thermal Shutdown
• Low-Power mode:
- Receiver monitoring bus and transmitter off,
(5 µA)
Description:
This device provides a bidirectional, half-duplex
communication, physical interface to automotive and
industrial LIN systems to meet the LIN Bus
Specification Revision 2.1 and SAE J2602. The device
is short-circuit and over-temperature protected by
internal circuitry. The device has been specifically
designed to operate in the automotive operating
environment and will survive all specified transient
conditions while meeting all of the stringent quiescent
current requirements.
MCP200X family members:
• 8-pin PDIP, DFN and SOIC packages:
- MCP2003, LIN-compatible driver, with WAKE
pins, wake-up on falling edge of LBUS
- MCP2003A, LIN-compatible driver, with
WAKE pins, wake-up on rising edge of LBUS
- MCP2004, LIN-compatible driver, with
FAULT/TXE pins, wake-up on falling edge of
LBUS
- MCP2004A, LIN-compatible driver, with
FAULT/TXE pins, wake-up on rising edge of
LBUS
Package Types
MCP2003/2003A
PDIP, SOIC
MCP2004/2004A
PDIP, SOIC
RXD 1
CS 2
WAKE 3
TXD 4
8 VREN
RXD 1
7 VBB CS/WAKE 2
6 LBUS FAULT/TXE 3
5 VSS
TXD 4
8 VREN
7 VBB
6 LBUS
5 VSS
MCP2003/2003A
4x4 DFN*
MCP2004/2004A
4x4 DFN*
RXD 1
8 VREN
RXD 1
8 VREN
CS 2 EP 7 VBB CS/WAKE 2 EP 7 VBB
WAKE 3 9 6 LBUS FAULT/TXE 3 9 6 LBUS
TXD 4
5 VSS
TXD 4
5 VSS
* Includes Exposed Thermal Pad (EP); see Table 1-2.
2010-2014 Microchip Technology Inc.
DS20002230F-page 1




MCP2004A pdf, 반도체, 판매, 대치품
MCP2003/4/3A/4A
1.3 Modes of Operation
For an overview of all operational modes, refer to
Table 1-1.
1.3.1
POWER-DOWN MODE
In Power-Down mode, everything is off except the
wake-up section. This is the lowest power mode. The
receiver is off, thus its output is open-drain.
On CS going to a high level or a falling edge on WAKE
(MCP2003/MCP2003A only), the device will enter
Ready mode as soon as internal voltage stabilizes.
Refer to Section 2.4 “AC Specifications” for further
information. In addition, LIN bus activity will change
the device from Power-down mode to Ready mode;
MCP2003/4 wakes-up on a falling edge on LBUS,
followed by a low level lasting at least 20 µs.
MCP2003A/4A wakes-up on a rising edge on LBUS,
followed by a high level lasting 70 µs typically. See
Figures 1-2 to 1-5 about remote wake-up. If CS is held
high as the device transitions from Power-Down to
Ready mode, the device will transition to either
Operation or Transmitter Off mode, depending on TXD
input, as soon as internal voltages stabilize.
1.3.2 READY MODE
Upon entering the Ready mode, VREN is enabled and
the receiver detect circuit is powered up. The transmit-
ter remains disabled and the device is ready to receive
data but not to transmit.
Upon VBB supply pin power-on, the device will remain
in Ready mode as long as CS is low. When CS
transitions high, the device will either enter Operation
mode, if TXD pin is held high, or the device will enter
Transmitter Off mode, if TXD pin is held low.
1.3.3 OPERATION MODE
In this mode, all internal modules are operational.
The device will go into Power-Down mode on the falling
edge of CS. For the MCP2003/4 device, a specific
process should be followed to put all nodes into Power-
Down mode. Refer to Section 1.6 “MCP2003/4 and
MCP2003A/4A Difference Details” and Figure 1-6.
The device will enter Transmitter Off mode in the event
of a Fault condition, such as: thermal overload, bus
contention and TXD timer expiration.
The MCP2004/2004A device can also enter
Transmitter Off mode if the FAULT/TXE pin is pulled
low. The VBB to LBUS pull-up resistor is connected only
in Operation mode.
1.3.4 TRANSMITTER OFF MODE
Transmitter Off mode is reached whenever the
transmitter is disabled either due to a Fault condition or
pulling the FAULT/TXE pin low on the MCP2004/2004A.
The Fault conditions include: thermal overload, bus
contention, RXD monitoring or TXD timer expiration.
The device will go into Power-Down mode on the falling
edge of CS, or return to Operation mode if all faults are
resolved and the FAULT/TXE pin on the
MCP2004/2004A is high.
FIGURE 1-2:
OPERATIONAL MODES STATE DIAGRAM – MCP2003
POR
VREN OFF
RX OFF
TX OFF
VBAT > 5.5V
Ready
VREN ON
RX ON
TX OFF
CS = 1 & TXD = 0
CS = 1 & TXD = 1
Falling edge on LIN
or CS = 1
or falling edge on WAKE pin
TOFF
Mode
VREN ON
RX ON
TX OFF
CS = 1 & TXD = 1 & No Fault
Fault (thermal or timer)
Operation
Mode
VREN ON
RX ON
TX ON
CS = 0
POWER
DOWN
VREN OFF
RX OFF
TX OFF
CS = 0
DS20002230F-page 4
2010-2014 Microchip Technology Inc.

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MCP2004A 전자부품, 판매, 대치품
MCP2003/4/3A/4A
1.4 Typical Applications
EXAMPLE 1-1:
TYPICAL MCP2003/2003A APPLICATION
+12
+12 optional resistor and transient suppressor
VDD
TXD
RXD
I/O
3.9 k
4.7 k
(1)
Voltage Reg
33 k
Wake-up
50
43V
1.0 µF
Master Node Only
+12
VREN
TXD
RXD
CS
WAKE
VSS
VBB
LBUS
1 k
220pF
LIN Bus
MMBZ27V(2)
Note 1: For applications with current requirements of less than 20 mA, the connection to +12V can be
deleted, and voltage to the regulator supplied directly from the VREN pin.
2: ESD protection diode.
EXAMPLE 1-2:
TYPICAL MCP2004/2004A APPLICATION
+12
+12
optional resistor and transient suppressor
Wake-up
220 k
(1)
50
43V
1.0 µF
Master Node Only
+12
VDD
TXD
RXD
I/O
I/O
4.7 k
Voltage Reg
100 nF
VREN
VBB
TXD
RXD
CS/WAKE
LBUS
1 k
FAULT/TXE
VSS
220pF
LIN Bus
MMBZ27V(2)
Note 1: For applications with current requirements of less than 20 mA, the connection to +12V can be
deleted, and voltage to the regulator supplied directly from the VREN pin.
2: ESD protection diode.
2010-2014 Microchip Technology Inc.
DS20002230F-page 7

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