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| 型号： | MC68HC705P6AMDW |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 53/98页 |
| 文件大小： | 0K |
| 描述： | IC MCU 4.6K OTP 2.1MHZ 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，WDT |
| 输入/输出数： | 21 |
| 程序存储器容量： | 4.5KB（4.5K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 176 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 3 V ~ 5.5 V |
| 数据转换器： | A/D 4x8b |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
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MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
Freescale Semiconductor
57
Chapter 10
EPROM
10.1 Introduction
The user EPROM consists of 48 bytes of user page zero EPROM from $0020 to $004F, 4608 bytes of
user EPROM from $0100 to $12FF, the two MOR reset values located at $1EFF and $1F00, and 16 bytes
of user vectors EPROM from $1FF0 to $1FFF. The bootloader ROM and vectors are located from $1F01
to $1FEF.
10.2 EPROM Erasing
NOTE
Only parts packaged in a windowed package may be erased. Others are
one-time programmable and may not be erased by UV exposure.
The MC68HC705P6A can be erased by exposure to a high-intensity ultraviolet (UV) light with a
wavelength of 2537 angstroms. The recommended dose (UV intensity multiplied by exposure time) is
15 Ws/cm2. UV lamps without shortwave filters should be used, and the EPROM device should be
positioned about one inch from the UV lamp. An erased EPROM byte will read as $00.
10.3 EPROM Programming Sequence
The bootloader software goes through a complete write cycle of the EPROM including the MOR. This is
followed by a verify cycle which continually branches in a loop if an error is found. A sample routine to
program a byte of EPROM is shown in Table 10-1.
NOTE
To avoid damage to the MCU, VDD must be applied to the MCU before VPP.
10.4 EPROM Registers
Three registers are associated with the EPROM: the EPROM programming register (EPROG) and the
two mask option registers (MOR). The EPROG register controls the actual programming of the EPROM
bytes and the MOR. The MOR registers control the six mask options found on the ROM version of this
MCU (MC68HC05P6), the EPROM security feature, and eight additional port A interrupt options.
10.5 EPROM Programming Register (EPROG)
This register is used to program the EPROM array. Only the ELAT and EPGM bits are available.
Table 10-1 shows the location of each bit in the EPROG register and the state of these bits coming out of
reset. All the bits in the EPROG register are cleared by reset.
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相关代理商/技术参数 |
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| MC68HC705P6AMP | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HC705P6CDW | 制造商:Motorola Inc 功能描述: |
| MC68HC705P6CP | 制造商:Freescale Semiconductor 功能描述: 制造商:Motorola Inc 功能描述: |
| MC68HC705P6ECDW | 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
| MC68HC705SR3CP | 功能描述:IC MCU 3.75K 2.1MHZ OTP 40-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 |
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