MC68SEC000AA16 Freescale Semiconductor, MC68SEC000AA16 Datasheet - Page 23

• 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

1.4.4 E-Clock Output (E)
E is the output connection for the internally generated E clock. The signal from E is used as a timing
reference. The frequency of the E-clock output is one fourth that of the input frequency at the XTAL and
EXTAL pins. When E-clock output is low, an internal process is taking place. When it is high, data is being
accessed.
All clocks, including the E clock, are halted when the MCU is in stop mode. To reduce RFI emissions, the
E-clock output of most E-series devices can be disabled while operating in single-chip modes.
The E-clock signal is always enabled on the MC68HC811E2.
1.4.5 Interrupt Request (IRQ)
The IRQ input provides a means of applying asynchronous interrupt requests to the MCU. Either negative
edge-sensitive triggering or level-sensitive triggering is program selectable (OPTION register). IRQ is
always configured to level-sensitive triggering at reset. When using IRQ in a level-sensitive wired-OR
configuration, connect an external pullup resistor, typically 4.7 kΩ, to V
1.4.6 Non-Maskable Interrupt (XIRQ/V
The XIRQ input provides a means of requesting a non-maskable interrupt after reset initialization. During
reset, the X bit in the condition code register (CCR) is set and any interrupt is masked until MCU software
enables it. Because the XIRQ input is level-sensitive, it can be connected to a multiple-source wired-OR
network with an external pullup resistor to V
Whenever XIRQ or IRQ is used with multiple interrupt sources each source must drive the interrupt input
with an open-drain type of driver to avoid contention between outputs.
Freescale Semiconductor
Figure 1-9. Common Parallel Resonant Crystal Connections
MCU
Figure 1-10. External Oscillator Connections
MCU
EXTAL
XTAL
EXTAL
XTAL
M68HC11E Family Data Sheet, Rev. 5.1
NC
DD
PPE
. XIRQ is often used as a power loss detect interrupt.
10 MΩ
)
EXTERNAL OSCILLATOR
CRYSTAL
CMOS-COMPATIBLE
4 x E
4 x E
C
C
L
L
DD
.
Pin Descriptions
23