參數(shù)資料
型號: MC68HLC705KJ1C
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDIP16
封裝: PLASTIC, DIP-16
文件頁數(shù): 64/144頁
文件大?。?/td> 1575K
代理商: MC68HLC705KJ1C
Technical Data
MC68HC705KJ1MC68HRC705KJ1MC68HLC705KJ1 — Rev. 3.0
26
Pin Descriptions
MOTOROLA
Pin Descriptions
2.2 Pin Assignments
Figure 2-1. Pin Assignments
2.3 Pin Functions
The pin functions of the MCUs are described in these subsections.
2.3.1 VDD and VSS
VDD and VSS are the power supply and ground pins. The MCU operates
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, as Figure 2-2 shows, by placing the bypass
capacitors as close as possible to the MCU. C2 is an optional bulk
current bypass capacitor for use in applications that require the port pins
to source high current levels.
RESET
1
OSC1
2
OSC2
3
PB3
4
PB2
5
VDD
6
VSS
7
PA7
8
IRQ/VPP
16
PA0
15
PA1
14
PA2
13
PA3
12
PA4
11
PA5
10
PA6
9
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