Datasheet

PIC16C5X
DS30453E-page 160 Preliminary  1997-2013 Microchip Technology Inc.
19.4 Timing Diagrams and Specifications
FIGURE 19-3: EXTERNAL CLOCK TIMING - PIC16C5X-40
TABLE 19-1: EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16C5X-40
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature 0C  T
A  +70C for commercial
Param
No.
Symbol Characteristic Min Typ† Max Units Conditions
F
OSC External CLKIN Frequency
(1)
20 — 40 MHz HS OSC mode
1T
OSC External CLKIN Period
(1)
25 — — ns HS OSC mode
2 Tcy Instruction Cycle Time
(2)
—4/FOSC ——
3 TosL, TosH Clock in (OSC1) Low or High
Time
6.0* — — ns HS oscillator
4 TosR, TosF Clock in (OSC1) Rise or Fall
Time
— — 6.5* ns HS oscillator
* These parameters are characterized but not tested.
† 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.
Note 1: All specified values are based on characterization data for that particular oscillator type under standard oper-
ating conditions with the device executing code. Exceeding these specified limits may result in an 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.
2: Instruction cycle period (T
CY) equals four times the input oscillator time base period.
OSC1
CLKOUT
Q4
Q1 Q2
Q3 Q4 Q1
133
44
2