参数资料
型号: MC68HC708MP16VFU
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8.2 MHz, MICROCONTROLLER, PQFP64
封装: PLASTIC, QFP-64
文件页数: 28/44页
文件大小: 3515K
代理商: MC68HC708MP16VFU
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Description
Technical Data
MC68HC708MP16 Rev. 3.0
34
General Description
MOTOROLA
1.5.1 Power Supply Pins (VDD and VSS)
VDD and VSS are the power supply and ground pins. The MCU operates
from a single power supply.
Fast signal transitions on MCU pins place high, short-duration current
demands on the power supply. To prevent noise problems, take special
care to provide power supply bypassing at the MCU as Figure 1-3
shows. Place the C1 bypass capacitor as close to the MCU as possible.
Use a high-frequency-response ceramic capacitor for C1. C2 is an
optional bulk current bypass capacitor for use in applications that require
the port pins to source high current levels.
Figure 1-3. Power Supply Bypassing
1.5.2 Oscillator Pins (OSC1 and OSC2)
The OSC1 and OSC2 pins are the connections for the on-chip oscillator
1.5.3 External Reset Pin (RST)
A logic 0 on the RST pin forces the MCU to a known start-up state. RST
is bidirectional, allowing a reset of the entire system. It is driven low when
MCU
V
DD
C2
C1
0.1
F
V
SS
V
DD
+
Note: Component values shown represent typical applications.
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