MCP2140-I/SSRVB Microchip Technology, MCP2140-I/SSRVB Datasheet - Page 6
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MCP2140-I/SSRVB
Manufacturer Part Number
MCP2140-I/SSRVB
Description
9600 BAUD FIXED SPEED IRDA PROTOCOL HANDLER & BIT ENCODER/DECODER, -40C to +85C, 20-SSOP 208mil, TUBE
Manufacturer
Microchip Technology
Datasheet
1.MCP2140-ISSRVB.pdf
(58 pages)
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MCP2140
TABLE 1-2:
DS21790A-page 6
RTS
V
OSC2
OSC1/CLKIN
CD
RXPD
Legend:
Pin Name
DD
1: The state of the DTR output pin does not reflect the state of the DTR bit of the IrDA Primary Device.
TTL = TTL compatible input
A = Analog
CMOS = CMOS compatible input
I = Input
PDIP
13
14
15
16
17
18
MCP2140 PIN DESCRIPTION NORMAL OPERATION (DCE) (CONTINUED)
Pin Number
SOIC SSOP
13
14
15
16
17
18
15, 16
14
17
18
19
20
Type
Pin
—
O
I
I
I
I
Buffer
CMOS Oscillator crystal input/external clock source input.
Type
OC = Open collector output
ST = Schmitt Trigger input with CMOS levels
P = Power
O = Output
TTL
ST
Preliminary
—
P
A
Request to Send. Indicates that a Host Controller is ready to
receive data from the MCP2140. This signal is locally emu-
lated and not related to the CTS/RTS bit of the IrDA Primary
device.
1 = Host Controller not ready to receive data
0 = Host Controller ready to receive data
Positive supply for logic and I/O pins.
Carrier Detect. The state of this bit is communicated to the
IrDA Primary device via the IrDA CD bit.
1 = No Carrier Present
0 = Carrier Present
to be a pulse to indicate an IR bit. When the amplitude of the
signal crosses the amplitude threshold set by the RXPDREF
pin, the IR bit is detected. The pulse has minimum and max-
imum requirements as specified in
Oscillator crystal output.
IR RX Photo Detect Diode input. This input signal is required
Description
2003 Microchip Technology Inc.
Parameter
IR131A.
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