MCP2140T-I/SS Microchip Technology, MCP2140T-I/SS Datasheet - Page 11
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MCP2140T-I/SS
Manufacturer Part Number
MCP2140T-I/SS
Description
IC IRDA CONTROLLR DTE/DCE 20SSOP
Manufacturer
Microchip Technology
Specifications of MCP2140T-I/SS
Package / Case
20-SSOP
Controller Type
IRDA Standard Protocol Stack Controller
Interface
UART
Voltage - Supply
3 V ~ 5.5 V
Current - Supply
2.2mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
MCP2140DM-TMPSNS - BOARD DEMO FOR MCP2140
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP2140T-I/SS
Manufacturer:
BOURNS
Quantity:
12 000
Part Number:
MCP2140T-I/SS
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
2.5
The encoder converts the UART format data into the
IrDA Standard format data and the decoder converts
IrDA Standard format data into UART format data.
2.5.1
The data that the MCP2140 UART received (on the TX
pin) that needs to be transmitted (on the TXIR pin) will
need to be modulated. This modulated signal drives the
IR transceiver module.
of the modulated signal.
FIGURE 2-5:
2003 Microchip Technology Inc.
Note:
BITCLK
TX Bit
Value
TXIR
Encoder/Decoder
The signal on the TXIR pin does not actu-
ally line up in time with the bit value that
was transmitted on the TX pin, as shown in
Figure
represent the value to be transmitted on
the TXIR pin.
ENCODER (MODULATION)
2-5. The TX bit value is shown to
Start Bit
16 CLK
ENCODING
Figure 2-5
0
7 CLK
24 Tosc
shows the encoding
Data bit 0
1
Data bit 1
Preliminary
0
Each bit time is comprised of 16-bit clocks. If the value
to be transmitted (as determined by the TX pin) is a
logic-low, the TXIR pin will output a low level for 7-bit
clock cycles, a logic high level for 3-bit clock cycles or
a minimum of 1.6 µsec (see
remaining 6-bit clock cycles will be low. If the value to
transmit is a logic-high, the TXIR pin will output a low
level for the entire 16-bit clock cycles.
Data bit 2
0
Data bit ...
1
MCP2140
Parameter
0
DS21790A-page 11
IR121). The