参数资料
型号: MCR705JP7CDWE
厂商: Freescale Semiconductor
文件页数: 26/164页
文件大小: 0K
描述: MCU 8BIT 224B RAM 28-SOIC
标准包装: 26
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-SOIC(0.295",7.50mm 宽)
包装: 管件
EPROM Registers
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
121
DELAY — Stop Startup Delay Bit
This EPROM bit selects the number of bus cycles that must elapse before bus activity begins following
a restart from the stop mode.
1 = Startup delay is 4064 bus cycles.
0 = Startup delay is 16 bus cycles.
CAUTION
The 16-cycle delay option will work properly in devices with the internal
low-power oscillator or with a steady external clock source. Check
crystal/ceramic resonator specifications carefully before using the 16-cycle
delay option with a crystal or ceramic resonator.
OSCRES — Oscillator Resistor Bit
This EPROM bit configures the internal shunt resistor.
1 = Oscillator configured with 2 M shunt resistor
0 = Oscillator configured without a shunt resistor
NOTE
The optional oscillator resistor is NOT recommended for devices that use
an external RC oscillator. For such devices, this bit should be left erased as
a 0.
SWAIT — STOP Conversion to WAIT Bit
This EPROM bit disables the STOP instruction and prevents inadvertently turning off the COP
watchdog with a STOP instruction. When the SWAIT bit is set, a STOP instruction puts the MCU in
halt mode. Halt mode is a wait-like low-power state. The internal oscillator and timer clock continue to
run, but the CPU clock stops. When the SWAIT bit is clear, a STOP instruction stops the internal
oscillator, the internal clock, the CPU clock, the timer clock, and the COP watchdog timer.
1 = STOP instruction converted to WAIT instruction
0 = STOP instruction not converted to WAIT instruction
LVREN — Low-Voltage Reset Enable Bit
This EPROM bit enables the low-voltage reset (LVR) function.
1 = LVR function enabled
0 = LVR function disabled
PIRQ — Port A IRQ Enable Bit
This EPROM bit enables the PA3–PA0 pins to function as external interrupt sources.
1 = PA3–PA0 enabled as external interrupt sources
0 = PA3–PA0 not enabled as external interrupt sources
LEVEL — External Interrupt Sensitivity Bit
This EPROM bit makes the external interrupt inputs level-triggered as well as edge-triggered
1 = IRQ/VPP pin negative-edge triggered and low-level triggered;
PA3–PA0 pins positive-edge triggered and high-level triggered
0 = IRQ/VPP pin negative-edge triggered only; PA3–PA0 pins positive-edge triggered only
COPEN — COP Watchdog Enable Bit
This EPROM bit enables the COP watchdog.
1 = COP watchdog enabled
0 = COP watchdog disabled
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