MC68HC705C8ACFN Freescale Semiconductor, MC68HC705C8ACFN Datasheet - Page 29

• 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: -

1.7 Pin Functions
1.7.1 V
1.7.2 V
MC68HC705C8A — Rev. 3
MOTOROLA
DD
PP
and V
NOTE:
SS
This subsection describes the MC68HC705C8A signals. Reference is
made, where applicable, to other sections that contain more detail about
the function being performed.
V
from a single power supply.
Very fast signal transitions occur
on the MCU pins, placing high
short-duration current demands
on the power supply. To prevent
noise problems, take special care
to provide good power supply
bypassing at the MCU. Place
bypass capacitors as close to the
MCU as possible, as shown in
Figure
This pin provides the programming voltage to the EPROM array. For
normal operation, V
Connecting the V
result in damage to the MCU.
DD
Freescale Semiconductor, Inc.
and V
For More Information On This Product,
1-7.
SS
Go to: www.freescale.com
are the power supply and ground pins. The MCU operates
General Description
PP
PP
pin (programming voltage) to V
shuld be tied to V
Figure 1-7. Bypassing Layout
DD
.
Recommendation
MCU
V
V
SS
DD
SS
C1
(ground) could
General Description
V+
+
Technical Data
C2
Pin Functions
29