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| 型号： | MC68HC705F8B |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 1.8 MHz, MICROCONTROLLER, PDIP56 |
| 封装： | PLASTIC, SDIP-56 |
| 文件页数： | 12/126页 |
| 文件大小： | 1084K |
| 代理商： | MC68HC705F8B |
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MC68HC05F8
MOTOROLA
12-5
OPERATING MODES
12
LAT - Latch EPROM Data and Address
1 (set)
–
EPROM address and data buses congured for programming.
0 (clear) –
EPROM address and data buses congured for normal reads.
LAT causes address and data buses to be latched when a write to EPROM is carried out. The
EPROM cannot be read if LAT=1. This bit should not be set unless a programming voltage is
applied to the VPP pin.
EPGM - EPROM Programming Mode Enable
1 (set)
–
Programming power connected to the EPROM array.
0 (clear) –
Programming power disconnected from the EPROM array.
LAT and EPMG cannot be set on the same write operation. EPMG can only be set if LAT is set.
EPMG is automatically cleared when LAT is cleared.
12.3.2
EPROM Programming Sequence
In the bootstrap, the user program contained in an external EPROM is copied into the internal
EPROM of the MC68HC705F8 device (see Figure 12-5). The MC68HC705F8 device is inserted
into the programming circuit as shown in Figure 12-5. Programming routine is selected via mode
switch S1, and +5V and VPP power is applied to the programming circuitry. The MCU is removed
from the reset state and placed in the run mode of operation via switch S4, and MCU control is
transferred to the bootstrap ROM. The selected programming routine is then executed.
Programming sequence of events are as follows:
1) Place switch S4 to RESET position (switch close).
2) Select programming routine via switches S1.
3) Apply +5 V and VPP power to programming circuitry.
4) Place switch S4 to RUN position (switch open).
5) Programming routine is executed.
6) Place switch S4 to RESET position.
7) Remove VPP and +5 V power, or select and run new routine.
Once the bootstrap mode is entered, mode switch setting is scanned to establish the routine to be
executed. The routines are:
–
Program and Verify EPROM
–
Verify EPROM Contents
Note:
When programming the window part MC68HC705F8, the window should be covered
up to prevent erratic device behaviour.
TPG
107
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For More Information On This Product,
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For More Information On This Product,
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相关代理商/技术参数 |
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| MC68HC705G1B | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HC705J1A | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC705J1ACDW | 功能描述:IC MCU 4MHZ 1.2K OTP 20-SOIC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
| MC68HC705J1ACP | 功能描述:IC MCU 4MHZ 1.2K OTP 20-DIP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
| MC68HC705J1ACPE | 功能描述:8位微控制器 -MCU HCO5 CORE+1.2K RAM + EPR 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 |
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