PIC16HV540 Datasheet, PDF (24/36 Pages) Microchip Technology – Enhanced PIC16C54 EPROM-Based 8-Bit CMOS Microcontroller With On-Chip Voltage Regulator

PIC16HV540
7.4 Timing Diagrams and Specifications
FIGURE 7-2: EXTERNAL CLOCK TIMING - PIC16HV540
Q4
Q1
Q2
Q3
Q4
Q1
OSC1
1
3
3
4
4
2
CLKOUT
TABLE 7-1: EXTERNAL CLOCK TIMING REQUIREMENTS - PIC16HV540
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
0°C ≤ TA ≤ +70°C (commercial),
–40°C ≤ TA ≤ +85°C (industrial)
Parameter
No.
Sym
Characteristic
Min Typ⁽¹⁾ Max Units
Conditions
FOSC External CLKIN Frequency⁽²⁾
DC —
4.0 MHz RC osc mode
DC —
20 MHz HS osc mode
DC —
4.0 MHz XT osc mode
Oscillator Frequency⁽²⁾
DC — 200 kHz LP osc mode
DC —
4.0 MHz RC osc mode
0.1 —
20 MHz HS osc mode
0.1 —
4.0 MHz XT osc mode
1
TOSC External CLKIN Period⁽²⁾
5
—
250 —
200 kHz LP osc mode
— ns RC osc mode
250 —
— ns HS osc mode
250 —
— ns XT osc mode
Oscillator Period⁽²⁾
5.0 —
250 —
— µs LP osc mode
— ns RC osc mode
250 — 10,000 ns HS osc mode
250 — 10,000 ns XT osc mode
2
TCY
Instruction Cycle Time⁽³⁾
5.0 — 200
— 4/FOSC —
µs LP osc mode
—
3
TosL, TosH Clock in (OSC1) Low or High Time 50 —
— ns HS osc mode
50* —
— ns XT oscillator
2.0* —
— µs LP oscillator
4
TosR, TosF Clock in (OSC1) Rise or Fall Time
—
—
25* ns HS osc mode
—
—
25* ns XT oscillator
—
—
50* ns LP oscillator
* These parameters are characterized but not tested.
Note 1: Data in the Typical (“Typ”) column is at VIO = 5V, VDD = 9V, 25˚C unless otherwise stated. These parameters are for design
guidance only and are not tested.
2: All specified values are based on characterization data for that particular oscillator type under standard operating condi-
tions 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 “DC” (no clock)
for all devices.
3: Instruction cycle period (TCY) equals four times the input oscillator time base period.
DS40197A-page 24
Preliminary
© 1998 Microchip Technology Inc.