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.
In the second method, the MODB/V
backup or from a second power supply, as shown in Figure 4-3. Using the MODB/
V
pin may require external hardware, but can be justified when a significant
STBY
amount of external circuitry is operating from V
contents, reset must be held low whenever V
to SECTION 5 RESETS AND INTERRUPTS.
V
DD
MAX
690
V
DD
V
BATT
4.8 V
NiCd
+
Figure 4-3 RAM Standby MODB/V
4.2.1 Priority and Mode Select Register
The four operating modes are selected with the logic states of the mode A (MODA)
and mode B (MODB) pins during reset. The MODA and MODB logic levels determine
the logic state of the special mode (SMOD) and mode A (MDA) control bits in the
HPRIO register.
After reset is released, the mode select pins no longer influence the MCU operating
mode. For single-chip mode, the MODA pin is connected to a logic zero. For expanded
mode, MODA is normally connected to V
MODA pin also functions as the load instruction register (LIR) pin when the MCU is not
in reset. The open drain active low LIR output pin drives low during the first E cycle of
each instruction. The MODB pin also functions as standby power input, V
maintains RAM contents in the absence of V
about hardware mode selection.
Table 4-2 Hardware Mode Select Summary
Inputs
MODB
MODA
1
0
1
1
0
0
0
1
OPERATING MODES AND ON-CHIP MEMORY
4-6
For More Information On This Product,
pin can supply RAM power from a battery
STBY
. If V
DD
STBY
is below normal operating level. Refer
DD
4.7k
TO MODB/V
STBY
V
OUT
OF M68HC11
Connections
STBY
through a pull-up resistor of 4.7 k
DD
. Refer to Table 4-2 for information
DD
Mode
RBOOT
Single-Chip
0
Expanded Multiplexed
0
Special Bootstrap
1
Special Test
0
Go to: www.freescale.com
is used to maintain RAM
MODB/VSTBY CONN
The
which
STBY,
Latched at Reset
SMOD
MDA
0
0
0
1
1
0
1
1
TECHNICAL DATA