MC68SEC000AA16 Freescale Semiconductor, MC68SEC000AA16 Datasheet - Page 22
![IC MPU 32BIT 16MHZ 64-QFP](/photos/6/76/67671/mc68sec000aa16_sml.jpg)
MC68SEC000AA16
Manufacturer Part Number
MC68SEC000AA16
Description
IC MPU 32BIT 16MHZ 64-QFP
Manufacturer
Freescale Semiconductor
Series
M68000r
Specifications of MC68SEC000AA16
Processor Type
M680x0 32-Bit
Speed
16MHz
Voltage
3.3V, 5V
Mounting Type
Surface Mount
Package / Case
64-QFP
Processor Series
M680xx
Core
CPU32
Maximum Clock Frequency
16 MHz
Operating Supply Voltage
3.3 V, 5 V
Maximum Operating Temperature
+ 105 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
Core Size
32 Bit
Cpu Speed
16MHz
Digital Ic Case Style
QFP
No. Of Pins
64
Supply Voltage Range
5V
Operating Temperature Range
0°C To +70°C
Frequency Typ
20MHz
Filter Terminals
SMD
Rohs Compliant
Yes
Clock Frequency
16MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
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Price
Company:
Part Number:
MC68SEC000AA16
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC68SEC000AA16
Manufacturer:
FREESCALE
Quantity:
20 000
Company:
Part Number:
MC68SEC000AA16R2
Manufacturer:
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Quantity:
10 000
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General Description
1.4.2 RESET
A bidirectional control signal, RESET, acts as an input to initialize the MCU to a known startup state. It
also acts as an open-drain output to indicate that an internal failure has been detected in either the clock
monitor or computer operating properly (COP) watchdog circuit. The CPU distinguishes between internal
and external reset conditions by sensing whether the reset pin rises to a logic 1 in less than two E-clock
cycles after a reset has occurred. See
Because the CPU is not able to fetch and execute instructions properly when V
operating voltage level, reset must be controlled. A low-voltage inhibit (LVI) circuit is required primarily for
protection of EEPROM contents. However, since the configuration register (CONFIG) value is read from
the EEPROM, protection is required even if the EEPROM array is not being used.
Presently, there are several economical ways to solve this problem. For example, two good external
components for LVI reset are:
Refer to
1.4.3 Crystal Driver and External Clock Input (XTAL and 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 must be left unterminated when an external CMOS- compatible clock input is connected to
the EXTAL pin. The XTAL output is normally intended to drive only a crystal. Refer to
Figure
22
1. The Seiko S0854HN (or other S805 series devices):
2. The Freescale MC34064:
1-10.
a. Extremely low power (2 µA)
a. TO-92 package
a. Limited temperature range, –20°C to +70°C
a. Available in various trip-point voltage ranges
a. TO-92 or SO-8 package
a. Draws about 300 µA
a. Temperature range –40°C to 85°C
a. Well controlled trip point
a. Inexpensive
Chapter 5 Resets and Interrupts
Do not connect an external resistor capacitor (RC) power-up delay circuit
to the reset pin of M68HC11 devices because the circuit charge time
constant can cause the device to misinterpret the type of reset that
occurred.
In all cases, use caution around the oscillator pins. Load capacitances
shown in the oscillator circuit are specified by the crystal manufacturer and
should include all stray layout capacitances.
M68HC11E Family Data Sheet, Rev. 5.1
Figure 1-7
for further information.
CAUTION
CAUTION
and
Figure
1-8.
DD
falls below the minimum
Freescale Semiconductor
Figure 1-9
and
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