MCP2140A Microchip Technology, MCP2140A Datasheet - Page 34

• Manufacturer Part Number: MCP2140A
• Description: IrDA Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate
• Manufacturer: Microchip Technology

MCP2140A
4.3
FIGURE 4-3:
TABLE 4-3:
DS22050A-page 34
AC Specifications
Note 1:
Param.
No.
1A
1B
1C
1
3
4
OSC1
2:
3:
4:
Timing Diagrams and Specifications
TosH,
TosR,
F
F
T
E
TosF
Sym
TosL
Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design
guidance only and are not tested.
These parameters are for design guidance only and are not tested.
All specified values are based on oscillator characterization data under standard operating conditions.
Exceeding these specified limits may result in unstable oscillator operation and/or higher than expected
current consumption. When an external clock input is used, the “max” cycle time limit is “DC” (no clock) for
all devices.
A duty cycle of no more than 60% (High time/Low time or Low time/High time) is recommended for external
clock inputs.
OSC
OSC
ERR
CLK
EXTERNAL CLOCK TIMING REQUIREMENTS
External CLKIN Period
Oscillator Period
External CLKIN
Frequency
Oscillator Frequency
Error in Frequency
External Clock Error
Clock in (OSC1)
High or Low Time
External Clock in (OSC1)
Rise or Fall Time
EXTERNAL CLOCK TIMING
Q4
Characteristic
(3, 4)
(3)
Q1
(3)
1
(3, 4)
Electrical Characteristics:
Standard Operating Conditions (unless otherwise specified):
Operating Temperature: -40°C ≤ T
Operating Voltage V
Characteristics”
3.6864
3.6864
100
271.3
271.3
271.3
Min
—
—
—
Q2
(2)
3.6864
2
Typ
—
—
—
—
—
—
—
—
(1)
3
DD
Q3
range is described in
3.6864
3.6864
± 0.01
± 0.01
271.3
271.3
85
Max
3
—
—
(2)
4
A
Units
MHz
MHz
≤ +85°C (industrial)
ns
ns
ns
ns
ns
%
%
Q4
© 2007 Microchip Technology Inc.
Device Operation
Low Power mode
(PHACT drives Low)
Section 4.1 “DC
4
Conditions
Q1