MCP2122
FIGURE 4-4:
I/O WAVEFORM
16XCLK
RX or
TXIR Pin
Old Value
20, 21
Note: Refer to Figure 4-2 for load conditions.
New Value
TABLE 4-4: I/O TIMING REQUIREMENTS
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature: –40°C ≤ TA ≤ +125°C (Extended)
Operating Voltage VDD range is described in
Section 4.1 “DC Characteristics”
Param.
No.
Sym
Characteristic
Min
Typ (1) Max Units
Conditions
20A
ToR RX pin rise time (2, 3)
—
10
25
ns VDD ≥ 2.7V (Note 3)
20B
—
10
60
ns VDD = 1.8V (Note 3)
20C
TXIR pin rise time (2, 3)
—
10
25
ns VDD ≥ 2.7V (Note 3)
20D
21A
ToF RX pin fall time (2, 3)
21C
TXIR pin fall time (2, 3)
—
10
60
ns VDD = 1.8V (Note 3)
—
10
35
ns Note 3
—
10
25
ns Note 3
Note 1: 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.
2: See Figure 4-2 for loading conditions.
3: These parameters (shaded) are characterized but are not tested. These values should be used for design
guidance only.
DS21894C-page 22
Preliminary
© 2007 Microchip Technology Inc.