PCM18XK1 Microchip Technology, PCM18XK1 Datasheet - Page 33

• Manufacturer Part Number: PCM18XK1
• Description: MODULE PROC PIC18F8680,6680,8565
• Manufacturer: Microchip Technology

Specifications of PCM18XK1

• Accessory Type: Processor Module
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: ICE2000
• For Use With: ICE2000 - EMULATOR MPLAB-ICE 2000 POD
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

2.7
When the device executes a SLEEP instruction, the on-
chip clocks and oscillator are turned off and the device
is held at the beginning of an instruction cycle (Q1
state). With the oscillator off, the OSC1 and OSC2
signals will stop oscillating. Since all the transistor
TABLE 2-3:
2.8
Power-up delays are controlled by two timers so that no
external Reset circuitry is required for most applica-
tions. The delays ensure that the device is kept in
Reset until the device power supply and clock are sta-
ble. For additional information on Reset operation, see
Section 3.0 “Reset”.
The first timer is the Power-up Timer (PWRT) which
optionally provides a fixed delay of 72 ms (nominal) on
power-up only (POR and BOR). The second timer is
the Oscillator Start-up Timer (OST), intended to keep
the chip in Reset until the crystal oscillator is stable.
 2004 Microchip Technology Inc.
RC
RCIO
ECIO
EC
LP, XT, and HS
Note:
OSC Mode
Effects of Sleep Mode on the
On-Chip Oscillator
Power-up Delays
See Table 3-1 in Section 3.0 “Reset”, for time-outs due to Sleep and MCLR Reset.
OSC1 AND OSC2 PIN STATES IN SLEEP MODE
Floating, external resistor should pull high
Floating, external resistor should pull high
Feedback inverter disabled at
quiescent voltage level
OSC1 Pin
Floating
Floating
PIC18F6585/8585/6680/8680
switching currents have been removed, Sleep mode
achieves the lowest current consumption of the device
(only leakage currents). Enabling any on-chip feature
that will operate during Sleep will increase the current
consumed during Sleep. The user can wake from
Sleep through external Reset, Watchdog Timer Reset,
or through an interrupt.
With the PLL enabled (HS+PLL and EC+PLL Oscillator
mode), the time-out sequence following a Power-on
Reset is different from other oscillator modes. The
time-out sequence is as follows: First, the PWRT time-
out is invoked after a POR time delay has expired.
Then, the Oscillator Start-up Timer (OST) is invoked.
However, this is still not a sufficient amount of time to
allow the PLL to lock at high frequencies. The PWRT
timer is used to provide an additional fixed 2 ms
(nominal) time-out to allow the PLL ample time to lock
to the incoming clock frequency.
Feedback inverter disabled at
Configured as PORTA, bit 6
Configured as PORTA, bit 6
quiescent voltage level
At logic low
At logic low
OSC2 Pin
DS30491C-page 31