参数资料
型号: MC705JP7CPE
厂商: Freescale Semiconductor
文件页数: 111/164页
文件大小: 0K
描述: IC MCU 8BIT 224 BYTES RAM 28PDIP
标准包装: 13
系列: HC05
核心处理器: HC05
芯体尺寸: 8-位
速度: 2.1MHz
连通性: SIO
外围设备: POR,温度传感器,WDT
输入/输出数: 22
程序存储器容量: 6KB(6K x 8)
程序存储器类型: OTP
RAM 容量: 224 x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
数据转换器: A/D 4x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 28-DIP(0.600",15.24mm)
包装: 管件
Operating Modes
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
50
Freescale Semiconductor
.
NOTE
When switching from LPO to EPO, the user must be careful to ensure that
the EPO has been enabled and powered up long enough to stabilize before
shifting clock sources.
IRQF — External Interrupt Request Flag
The IRQF flag is a clearable, read-only bit that is set when an external interrupt request is pending.
Refer to Chapter 4 Interrupts for more details.
IRQR — Interrupt Request Reset Bit
This write-only bit clears the IRQF flag bit and prevents redundant execution of interrupt routines. Refer
to Chapter 4 Interrupts for more details.
6.3 Low-Power Modes
Four modes of operation reduce power consumption:
Stop mode
Wait mode
Halt mode
Data-retention mode
Figure 6-2 shows the sequence of events in stop, wait, and halt modes.
Table 6-1. Oscillator Selection
OM2
OM1
Oscillator
Selected
Internal
Low-Power
Oscillator
(LPO)
External Pin
Oscillator
(EPO)
Power
Consumption
0
Internal
Enabled
Disabled
Lowest
0
1
External
Disabled
Enabled
Normal
1
0
Internal
Enabled
Disabled
Lowest
1
Internal
Enabled
Normal
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