IC MCU 8BIT 3MHZ 52-PLCC

MC68HC11E0CFNE3

Manufacturer Part NumberMC68HC11E0CFNE3
DescriptionIC MCU 8BIT 3MHZ 52-PLCC
ManufacturerFreescale Semiconductor
SeriesHC11
MC68HC11E0CFNE3 datasheets
 

Specifications of MC68HC11E0CFNE3

Core ProcessorHC11Core Size8-Bit
Speed3MHzConnectivitySCI, SPI
PeripheralsPOR, WDTNumber Of I /o38
Program Memory TypeROMlessRam Size512 x 8
Voltage - Supply (vcc/vdd)4.5 V ~ 5.5 VData ConvertersA/D 8x8b
Oscillator TypeInternalOperating Temperature-40°C ~ 85°C
Package / Case52-PLCCController Family/series68HC11
No. Of I/o's38Ram Memory Size512Byte
Cpu Speed3MHzNo. Of Timers1
Embedded Interface TypeSCI, SPIDigital Ic Case StyleLCC
Rohs CompliantYesProcessor SeriesHC11E
CoreHC11Data Bus Width8 bit
Data Ram Size512 BInterface TypeSCI, SPI
Maximum Clock Frequency3 MHzNumber Of Programmable I/os38
Number Of Timers8Maximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTMinimum Operating Temperature- 40 C
On-chip Adc8 bit, 8 ChannelLead Free Status / RoHS StatusLead free / RoHS Compliant
Eeprom Size-Program Memory Size-
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Freescale Semiconductor, Inc.
constant can cause the device to misinterpret the type of reset that occurred. Refer to
SECTION 5 RESETS AND INTERRUPTS for further information.
Figure 2-3 illustrates a reset circuit that uses an external switch. Use a low voltage
interrupt circuit, however, to prevent corruption of RAM.
V DD
2
IN
RESET
MC34(0/1)64
GND
3
Figure 2-3 External Reset Circuit
2.3 Crystal Driver and External Clock Input (XTAL, EXTAL)
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 is
four times higher than the desired E-clock rate.
The XTAL pin is normally left unterminated when an external CMOS compatible clock
input is connected to the EXTAL pin. However, a 10 k
nected 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.
In all cases, use caution around the oscillator pins. Load capacitances shown in the
oscillator circuits include all stray layout capacitances. Refer to Figure 2-4, Figure 2-
5, and Figure 2-6.
EXTAL
MCU
XTAL
*
THIS VALUE INCLUDES ALL STRAY CAPACITANCES.
Figure 2-4 Common Crystal Connections
TECHNICAL DATA
For More Information On This Product,
V DD
4.7 k
1
TO RESET
OF M68HC11
25 pF
10 M
4 x E
CRYSTAL
25 pF
PIN DESCRIPTIONS
Go to: www.freescale.com
EXT RESET CIRCUIT
to 100 k
load resistor con-
*
*
COMMON XTAL CONN
2-3