Datasheet

MCP2120
DS21618B-page 18 © 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 ≤ +85°C (industrial)
Operating Voltage V
DD range is described in Section 4.1 “DC
Characteristics”
Param.
No.
Sym Characteristic Min Typ
(1)
Max Units Conditions
17 TosH2ioV OSC1↑ (Q1 cycle) to Output
valid
(2)
——100ns
18 TosH2ioI OSC1↑ (Q2 cycle) to Input
invalid (I/O in hold time)
200 — — ns
19 TioV2osH Input valid to OSC1↑
(I/O in setup time)
0——ns
20 ToR RX and TXIR pin rise time
(2)
—1025ns
21 ToF RX and TXIR pin fall time
(2)
—1025ns
Note 1: Data in the Typical (“Typ”) column is at 5V, +25°C unless otherwise stated.
2: See Figure 4-2 for loading conditions.
OSC1
Input Pin
Output Pin
Q4
Q1
Q2 Q3
17
20, 21
18
Old Value
New Value
19
Note: Refer to Figure 4-2 for load conditions.