参数资料
型号: MC705L16CFUE
厂商: Freescale Semiconductor
文件页数: 82/146页
文件大小: 0K
描述: IC MCU 8BIT EPROM 80-QFP
标准包装: 84
系列: HC05
核心处理器: HC05
芯体尺寸: 8-位
速度: 2.1MHz
连通性: SPI
外围设备: LCD,POR,WDT
输入/输出数: 16
程序存储器容量: 16KB(16K x 8)
程序存储器类型: OTP
RAM 容量: 512 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: 80-QFP
包装: 托盘
Resets and Interrupts
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
40
Freescale Semiconductor
4.2 Interrupts
There are six hardware interrupt sources in the MC68HC05L16:
IRQ1 and IRQ2
Key wakeup interrupt (KWI)
Timer 1 (TOI, ICI, and OC1I)
Timer 2 (TI2I and OC2I)
Serial transfer complete interrupt (SSPI)
Timebase interrupt (TBI)
4.2.1 IRQ1 and IRQ2
Two external interrupt request inputs, IRQ1 and IRQ2, share the same vector address at $FFFA and
$FFFB.
Bits IRQ1S and IRQ2S in interrupt control register (INTCR) control whether IRQ1 and IRQ2, respectively,
respond only to the falling edge or falling edge and low level to trigger an interrupt. The IRQ1 and IRQ2
are enabled by IRQ1E and IRQ2E bits and IRQ1F and IRQ2F bits are provided as an indicator in the
interrupt status register (INTSR). Since the IRQ1(2)F can be set by either the pins or the data latches of
PC7(6), be sure to clear the flags by software before setting the IRQ1(2)E bit.
The IRQ1 and the IRQ2 pins are shared with port C bit 7 and bit 6, respectively, and IRQx pin states can
be determined by reading port C pins. The BIL and BIH instructions apply only to the IRQ1 input.
4.2.2 Key Wakeup Interrupt (KWI)
Eight key wakeup inputs (KWI0–KWI7) share pins with port B. Each key wakeup input is enabled by the
corresponding bit in the KWIEN register which resides in the option map, and KWI is enabled by the KWIE
bit in the INTCR. When a falling edge is detected at one of the enabled key wakeup inputs, the KWIF bit
in the INTSR is set and KWI is generated if KWIE = 1. Each input has a latch which responds only to the
falling edge at the pin, and all input latches are cleared at the same time by clearing the KWIF bit. See
4.2.3 IRQ (KWI) Software Consideration
IRQ and KWI interrupts have a timing delay in a case described in Figure 4-2. This section shows
programming for proper interrupts with IRQ or KWI.
Figure 4-1 shows an example of timer1 interrupt. In this case, the interrupt by TOF occurs as soon as the
TOIE (timer1 overflow interrupt enable) bit is set.
Figure 4-1. Timer 1 Interrupt
CLI
BSET TOIE, TCR
LDA
#$55
.
TOF Interrupt pending
Interrupt occurs before this instruction
相关PDF资料
PDF描述
MC705X32VFUE IC MCU 8BIT 32K FLASH 64-QFP
MC711P2CFNE3 IC MCU 8BIT 84-PLCC
MC7410VU450NE IC MPU RISC 32BIT 360-FCCBGA
MC7447AVU1333LB IC MPU RISC 32BIT 360-BGA
MC7448VS600ND IC MPU RISC 600MHZ 360-FCCLGA
相关代理商/技术参数
参数描述
MC705P6ACDWE 功能描述:8位微控制器 -MCU MCU 176 BYTES RAM A/D RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
MC705P6ACDWE 制造商:Freescale Semiconductor 功能描述:8-Bit Microcontroller IC
MC705P6ACDWER 功能描述:IC MCU 8BIT EPROM 28-SOIC RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 标准包装:1 系列:AVR® ATmega 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,SPI,UART/USART 外围设备:欠压检测/复位,POR,PWM,WDT 输入/输出数:32 程序存储器容量:32KB(16K x 16) 程序存储器类型:闪存 EEPROM 大小:1K x 8 RAM 容量:2K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:44-TQFP 包装:剪切带 (CT) 其它名称:ATMEGA324P-B15AZCT
MC705P6ACPE 功能描述:8位微控制器 -MCU HC705P6A 176 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
MC705P6AMDWE 功能描述:8位微控制器 -MCU MCU 176 BYTES RAM EPP RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT