MC68HC711P2CFN4 Freescale Semiconductor, MC68HC711P2CFN4 Datasheet - Page 24

• Manufacturer Part Number: MC68HC711P2CFN4
• Description: IC MCU 32K OTP 4MHZ 84-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC11r

Specifications of MC68HC711P2CFN4

• Core Processor: HC11
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: MI Bus, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 50
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Eeprom Size: 640 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Pin Descriptions
2.5 Crystal driver and external clock input (XTAL, EXTAL)
Technical Data
These two pins provide the interface for either a crystal or a CMOS
compatible clock to control the internal clock generator circuitry. The
frequency applied to these pins must be four times higher than the
desired E clock rate (unless the PLL circuit is used to provide the E
clock).
The XTAL pin is normally left unconnected when an external CMOS
compatible clock input is connected to the EXTAL pin. However, a 10 k¾
to 100 k¾ load resistor connected from XTAL to ground can be used to
reduce RFI noise emission. The XTAL output is normally intended to
drive only a crystal. The XTAL output can be buffered with a high-
impedance buffer, or it can be used to drive the EXTAL input of another
M68HC11 family device.
Freescale Semiconductor, Inc.
For More Information On This Product,
Manual
reset
Go to: www.freescale.com
4.7 k¾
Pin Descriptions
Figure 2-2. External reset circuitry
V
DD
4.7 k¾
1µF
MC34064
MC34164
GND
GND
V
IN
IN
DD
2
3
2
3
RESET
RESET
1
1
V
MC68HC11P2 — Rev 1.0
DD
4.7 k¾
To M68HC11
RESET