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| 型号： | MC9RS08KA1CSCR |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 68/136页 |
| 文件大小： | 0K |
| 描述： | IC MCU 8-BIT 1K FLASH 8-SOIC |
| 产品培训模块： | Mechatronics USBSpyder08 Discovery Kit RS08KA2 Low-End Microcontroller Series MC9RS08KA8 Microcontroller |
| 标准包装： | 1 |
| 系列： | RS08 |
| 核心处理器： | RS08 |
| 芯体尺寸： | 8-位 |
| 速度： | 10MHz |
| 外围设备： | LVD，POR，WDT |
| 输入/输出数： | 4 |
| 程序存储器容量： | 1KB（1K x 8） |
| 程序存储器类型： | 闪存 |
| RAM 容量： | 63 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 1.8 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 标准包装 |
| 产品目录页面： | 726 (CN2011-ZH PDF) |
| 其它名称： | MC9RS08KA1CSCRDKR |
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Chapter 5 Resets, Interrupts, and General System Control
MC9RS08KA2 Series Data Sheet, Rev. 4
Freescale Semiconductor
37
and ACMP are still available to wake the CPU from wait or stop mode. It is the responsibility of the user
application to poll the corresponding module to determine the source of wakeup.
Each wakeup source of the module is associated with a corresponding interrupt enable bit. If the bit is
disabled, the interrupt source is gated, and that particular source cannot wake the CPU from wait or stop
mode. However, the corresponding interrupt flag will still be set to indicate that an external wakeup event
has occurred.
The system interrupt pending register (SIP1) indicates the status of the system pending interrupt. When
the read-only bit of the SIP1 is enabled, it shows there is a pending interrupt to be serviced from the
indicated module. Writing to the register bit has no effect. The pending interrupt flag will be cleared
automatically when the all corresponding interrupt flags from the indicated module are cleared.
5.6
Low-Voltage Detect (LVD) System
The MC9RS08KA2 Series includes a system to protect against low voltage conditions in order to protect
memory contents and control MCU system states during supply voltage variations. The system is
comprised of a power-on reset (POR) circuit and an LVD circuit with a predefined trip voltage. The LVD
circuit is enabled with LVDE in SPMSC1. The LVD is disabled upon entering stop mode unless LVDSE
is set in SPMSC1. If LVDSE and LVDE are both set, the current consumption in stop with the LVD enabled
will be greater.
5.6.1
Power-On Reset Operation
When power is initially applied to the MCU, or when the supply voltage drops below the VPOR level, the
POR circuit will cause a reset condition. As the supply voltage rises, the LVD circuit will hold the MCU
in reset until the supply has risen above the VLVD level. Both the POR bit and the LVD bit in SRS are set
following a POR.
5.6.2
LVD Reset Operation
The LVD can be configured to generate a reset upon detection of a low voltage condition by setting
LVDRE to 1. After an LVD reset has occurred, the LVD system will hold the MCU in reset until the supply
voltage has risen above the level VLVD. The LVD bit in the SRS register is set following either an LVD
reset or POR.
5.6.3
LVD Interrupt Operation
When a low voltage condition is detected and the LVD circuit is configured using SPMSC1 for interrupt
operation (LVDE set, LVDIE set, and LVDRE clear), LVDF in SPMSC1 will be set and an LVD interrupt
request will occur.
5.7
Real-Time Interrupt (RTI)
The real-time interrupt function can be used to generate periodic interrupts. The RTI is driven from either
the 1-kHz internal clock reference or the trimmed 32-kHz internal clock reference from the ICS module.
The 32-kHz internal clock reference is divided by 32 by the RTI logic to produce a trimmed 1-kHz clock
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相关代理商/技术参数 |
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|---|---|
| MC9RS08KA1DB | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC9RS08KA1PC | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC9RS08KA1SC | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC9RS08KA2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC9RS08KA2_07 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
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