RFPIC12C509AG Datasheet, PDF (83/104 Pages) Microchip Technology – 18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter

rfPIC12C509AG/509AF
11.5 Timing Diagrams and Specifications
FIGURE 11-4:
EXTERNAL CLOCK TIMING
Q4
OSC1
Q1
Q2
Q3
1
3
3
2
Q4
Q1
4
4
TABLE 11-3: EXTERNAL CLOCK TIMING REQUIREMENTS
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
–40°C ≤ TA ≤ +85°C (industrial)
Operating Voltage VDD range is described in Section 11.1
Parameter
No.
Sym
Characteristic
Min Typ⁽¹⁾ Max Units
Conditions
FOSC External CLKIN Frequency⁽²⁾
DC —
4 MHz XT osc mode
Oscillator Frequency⁽²⁾
DC — 200 kHz LP osc mode
DC —
4 MHz EXTRC osc mode
0.1 —
4 MHz XT osc mode
1
TOSC External CLKIN Period⁽²⁾
DC — 200 kHz LP osc mode
250 —
—
ns XT osc mode
Oscillator Period⁽²⁾
5
—
250 —
—
ms LP osc mode
—
ns EXTRC osc mode
250 — 10,000 ns XT osc mode
2
Tcy
Instruction Cycle Time⁽³⁾
5
—
—
— 4/FOSC —
ms LP osc mode
—
3
TosL, TosH Clock in (OSC1) Low or High Time 50* —
—
ns XT oscillator
2*
—
—
ms LP oscillator
4
TosR, TosF Clock in (OSC1) Rise or Fall Time —
—
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 5V, 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 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.
3: Instruction cycle period (TCY) equals four times the input oscillator time base period.
© 2001 Microchip Technology Inc.
Preliminary
DS70031A-page 81