PIC16C765-I/P Microchip Technology, PIC16C765-I/P Datasheet - Page 100

• Manufacturer Part Number: PIC16C765-I/P
• Description: IC MCU OTP 8KX14 USB 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C765-I/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Core Processor: PIC
• Speed: 24MHz
• Connectivity: SCI, UART/USART, USB
• Number Of I /o: 33
• Program Memory Type: OTP
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 4.35 V ~ 5.25 V
• Data Converters: A/D 8x8b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16C
• No. Of I/o's: 33
• Ram Memory Size: 256Byte
• Cpu Speed: 24MHz
• No. Of Timers: 3
• Processor Series: PIC16C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Maximum Clock Frequency: 24 MHz
• Number Of Programmable I/os: 33
• Number Of Timers: 3
• Operating Supply Voltage: 4.35 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000, DM163022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5 bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMING444-1001 - DEMO BOARD FOR PICMICRO MCU
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: Q975613

PIC16C745/765
13.2
13.2.1
The PIC16C745/765 can be operated in four different
oscillator modes. The user can program a configuration
bit (FOSC0) to select one of these four modes:
13.2.2
In HS mode, a crystal or ceramic resonator is con-
nected to the OSC1/CLKIN and OSC2/CLKOUT pins to
establish oscillation (Figure 13-1). The PIC16C745/
765 oscillator design requires the use of a parallel cut
crystal. Use of a series cut crystal may give a frequency
out of the crystal manufacturers specifications. When in
HS mode, the device can have an external clock
source to drive the OSC1/CLKIN pin (Figure 13-2). In
this mode, the oscillator start-up timer is active for a
period of 1024*T
MCU Reference Manual (DS33023) for details on
building an external oscillator.
FIGURE 13-1: CRYSTAL/CERAMIC
DS41124C-page 100
•
•
•
•
Note 1:
EC External Clock
E4 External Clock with internal PLL enabled
HS High Speed Crystal/Resonator
H4 High Speed Crystal/Resonator with
Oscillator Configurations
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
OSCILLATOR TYPES
C1
C2
internal PLL enabled
A series resistor may be required for AT strip cut
crystals.
Note1
OSC
XTAL
Rs
RESONATOR OPERATION
(HS OSC CONFIGURATION)
. See the PICmicro™ Mid-Range
OSC1
OSC2
Rf
PIC16C745/765
SLEEP
To internal
logic
Preliminary
TABLE 13-1:
TABLE 13-2:
13.2.3
In H4 mode, a PLL module is switched on in-line with
the clock provided across OSC1 and OCS2. The output
of the PLL drives F
13.2.4
An on-board 4x PLL provides a cheap means of gener-
ating a stable 24 MHz F
resonator. After power-up, a PLL settling time of less
than T
Ranges Tested:
These values are for design guidance only. See notes at
bottom of page.
HS
These values are for design guidance only. See notes at
bottom of page.
Note 1: Higher capacitance increases the stability
Osc Type
Mode
HS
2: Since each resonator/crystal has its own
3: Rs may be required in HS mode to avoid
4: When migrating from other PICmicro
5: Users should consult the USB Specification
PLLRT
H4 MODE
PLL
of the oscillator, but also increases the start-
up time.
characteristics, the user should consult the
resonator/crystal manufacturer for appropri-
ate values of external components.
overdriving crystals with low drive level
specification.
devices, oscillator performance should be
verified.
1.1 to ensure their resonator/crystal oscilla-
tor meets the required jitter limits for USB
operation.
is required.
6.0 MHz
6.0 MHz
Crystal
Freq
Freq
CERAMIC RESONATORS
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR
INT
.
INT
2000 Microchip Technology Inc.
Cap. Range
, using an external 6 MHz
15 - 33 pF
10 - 68 pF
OSC1
C1
Cap. Range
15 - 33 pF
10 - 68 pF
OSC2
C2