参数资料
型号: MC68HC705J1ACP
厂商: Freescale Semiconductor
文件页数: 81/162页
文件大小: 0K
描述: IC MCU 4MHZ 1.2K OTP 20-DIP
标准包装: 18
系列: HC05
核心处理器: HC05
芯体尺寸: 8-位
速度: 4MHz
外围设备: POR,WDT
输入/输出数: 14
程序存储器容量: 1.2KB(1.2K x 8)
程序存储器类型: OTP
RAM 容量: 64 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 20-DIP(0.300",7.62mm)
包装: 管件
General Description
Programmable Options
MC68HC705J1A — Rev. 4.0
Technical Data
General Description
1.4 Programmable Options
The options in Table 1-1 are programmable in the mask option register
(MOR).
1.5 Pin Assignments
Figure 1-2 shows the MC68HC705J1A pin assignments.
1.5.1 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 1-3 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.
Table 1-1. Programmable Options
Feature
Option
COP watchdog timer
Enabled or disabled
External interrupt triggering
Edge-sensitive only or edge- and level-sensitive
Port A IRQ pin interrupts
Enabled or disabled
Port pulldown resistors
Enabled or disabled
STOP instruction mode
Stop mode or halt mode
Crystal oscillator internal resistor
Enabled or disabled
EPROM security
Enabled or disabled
Short oscillator delay counter
Enabled or disabled
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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