Datasheet

MCP2122
DS21894C-page 22 Preliminary © 2007 Microchip Technology Inc.
FIGURE 4-4: I/O WAVEFORM
TABLE 4-4: I/O TIMING REQUIREMENTS
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature: –40°C ≤ T
A ≤ +125°C (Extended)
Operating Voltage V
DD 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
— 10 60 ns VDD = 1.8V (Note 3)
21A ToF RX pin fall time
(2, 3)
— 10 35 ns Note 3
21C TXIR pin fall time
(2, 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.
16XCLK
RX or
20, 21
Old Value
New Value
Note: Refer to Figure 4-2 for load conditions.
TXIR Pin