MC68HC705C8ACFN Freescale Semiconductor, MC68HC705C8ACFN Datasheet - Page 32

• Manufacturer Part Number: MC68HC705C8ACFN
• Description: IC MCU 4MHZ 8K OTP 44-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8ACFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 304 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

General Description
1.7.3.3 External Clock Signal
1.7.4 External Reset Pin (RESET)
1.7.5 External Interrupt Request Pin (IRQ)
1.7.6 Input Capture Pin (TCAP)
Technical Data
32
NOTE:
An external clock from another
CMOS-compatible device can drive the
OSC1 input, with the OSC2 pin
unconnected, as
The bus frequency (f
the processor clock cycle is two times the f
A logic 0 on the bidirectional RESET pin forces the MCU to a known
startup state. The RESET pin contains an internal Schmitt trigger as part
of its input to improve noise immunity. See
The IRQ pin is an asynchronous external interrupt pin. The IRQ pin
contains an internal Schmitt trigger as part of its input to improve noise
immunity. See
The TCAP pin is the input capture pin for the on-chip capture/compare
timer. The TCAP pin contains an internal Schmitt trigger as part of its
input to improve noise immunity. See
Timer.
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
4.3.2 External Interrupt
General Description
Figure 1-11
OP
) is one-half the external frequency (f
shows.
Section 8. Capture/Compare
(IRQ).
OSC
Section 5.
Figure 1-11. External
CMOS CLOCK
EXTERNAL
period.
MC68HC705C8A — Rev. 3
Clock
Resets.
MCU
OSC
MOTOROLA
) while