Datasheet

© 2007 Microchip Technology Inc. DS21664D-page 53
MCP2502X/5X
9.3 AC Characteristics
AC Characteristics
Industrial (I): TAMB = -40°C to +85°C VCC = 2.7V to 5.5V
Automotive (E): T
AMB = -40°C to +125°C VCC = 4.5V to 5.5V
Param.
No.
Sym Characteristics Min Max Units Test Conditions
F
OS CLKIN Frequency DC 4 MHz XT osc mode
DC 25 MHz HS osc mode (Note 3)
DC 200 kHz LP osc mode
F
OS Oscillator Frequency 0.1 4 MHz XT osc mode
4 25 MHz HS osc mode (Note 3)
5 200 kHz LP osc mode
1T
OSC CLKIN Period 250 — ns XT osc mode
40 — ns HS osc mode
5 — µs LP osc mode
Oscillator Period 0.25 10 µs XT osc mode
40 250 ns HS osc mode
5 — µs LP osc mode
3T
OSL CLKIN High or Low Time 100 — ns XT osc mode
T
OSH 15 — ns HS osc mode
2.5 — µs LP osc mode
4 Tosr CLKIN Rise or Fall Time — 25 ns XT osc mode (Note 1)
— 50 ns HS osc mode (Note 1)
— 15 ns LP osc mode (Note 1)
10 T
DCLKOUT CLKOUT Propagation Delay — 60 ns VDD = 4.5 V (Note 2)
12 T
CKR CLKOUT Rise Time — 100 ns Note 2
13 TCKR CLKOUT Fall Time — 200 ns Note 2
20 TIOR Port output rise time — 40 ns Note 1
21 T
IOF Port output fall time — 40 ns Note 1
30 TMCL RST Pulse Low 2 — µs VDD = 5V
32 TOST Oscillation Start-up Timer 512 — Tosc TOSC = OSC1 period
33 T
PWRT Power-up Timer 28 132 ms VDD = 5V
34 TIOZ I/O Hi-impedance from RST
low
—2.1µsNote 1
T
PWMR PWM output rise time — 25 ns Note 1
TPWMF PWM output fall time — 25 ns Note 1
T
AD A/D clock period 1.6 — µs VREFΔ ≥ 2.5V
3.0 — µs V
REF full range
TCNV Conversion Time (not
including acquisition time)
—13TAD
Note 1: This parameter is periodically sampled and not 100% tested.
2: Measurements are taken with CLKOUT output configured as 4 x T
OSC.
3: Refer to Figure 9-1.