MC68HC711E9FU Freescale Semiconductor, MC68HC711E9FU Datasheet - Page 23

MC68HC711E9FU

Manufacturer Part Number
MC68HC711E9FU
Description
Manufacturer
Freescale Semiconductor
Datasheet

Specifications of MC68HC711E9FU

Cpu Family
HC11
Device Core Size
8b
Frequency (max)
4MHz
Interface Type
SCI/SPI
Program Memory Type
EPROM
Program Memory Size
12KB
Total Internal Ram Size
512Byte
# I/os (max)
38
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
3V
On-chip Adc
8-chx8-bit
Instruction Set Architecture
CISC
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
64
Package Type
PQFP
Lead Free Status / Rohs Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MC68HC711E9FU
Manufacturer:
MOT
Quantity:
47
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

Related parts for MC68HC711E9FU