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| 型号： | MC68HC705P6ACDW |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 55/98页 |
| 文件大小： | 0K |
| 描述： | IC MCU 2.1MHZ 4.5K OTP 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 ~ 85°C |
| 封装/外壳： | 28-SOIC（0.295"，7.50mm 宽） |
| 包装： | 管件 |
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EPROM Bootloader
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
Freescale Semiconductor
59
10.6 EPROM Bootloader
Three port pins are associated with bootloader control functions: PC3, PC4, and PC6. Table 10-2
summarizes their functionality.
10.7 Programming from an External Memory Device
In this programming mode, PC5 must be connected to VSS. PC4 and PC3 are used to select the
programming mode. The programming circuit shown in Figure 10-2 uses an external 12-bit counter to
address the memory device containing the code to be copied. This counter requires a clock and a reset
function. The 12-bit counter can address up to 4 Kbytes of memory, which means that a port pin has to
be used to address the remaining 4 K of the 8-K memory space.
The following procedure explains how to use the programming circuit shown in Figure 10-2 to copy a user
program from an external memory device into the MCU’s EPROM:
1.
Program a 2764-type EPROM device with the desired instructions and data. Code programmed
into the 2764 must appear at the same addresses desired in the MC68HC705P6A. Therefore, the
page zero code must start at $0020 and end at $004F, the main body of code must start at $0100
and end at $12FF, and the user vectors must start at $1FF0 and end at $1FFF.
NOTE
The MOR data must appear at $1EFF and $1F00.
2.
Install the programmed 2764 device into the programming circuit.
3.
Install the MC68HC705P6A to be programmed into the programming circuit.
4.
Set the PROGRAM and/or VERIFY switches for the desired operation (an open switch is the active
state) and close the RESET switch to hold the MCU in reset.
5.
Make sure that the VPP source is OFF.
6.
Apply the VDD source to the programming circuit.
7.
Apply the VPP source to the programming circuit.
8.
Open the RESET switch to allow the MCU to come out of reset and begin execution of the software
in its internal bootloader ROM.
9.
Wait for programming and/or verification to complete (about 40 seconds). The PROGRAM LED will
light during programming and the VERIFY LED will light if verification was requested and was
successful.
10.
When complete, close the RESET switch to force the MCU into the reset state.
11.
Turn off the VPP source.
12.
Turn off the VDD source.
13.
Remove device(s).
Table 10-2. Bootloader Control Pins
PC6
PC4
PC3
Mode
111
Program/verify
110
Verify only
1
0
Dump MCU EPROM to port A
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| MC68HC705P6ACP | 功能描述:IC MCU 2.1MHZ 4.5K OTP 28-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 |
| MC68HC705P6ADW | 制造商:Rochester Electronics LLC 功能描述:MCU, 176 BYTES RAM, A/D - Bulk |
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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: |
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