參數(shù)資料
型號: MC68HC705P6ACSD
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER
文件頁數(shù): 117/130頁
文件大?。?/td> 1541K
代理商: MC68HC705P6ACSD
EPROM
Programming from an External Memory Device
MC68HC705P6A — Rev. 2.0
Advance Information
MOTOROLA
EPROM
87
10.8 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.
相關(guān)PDF資料
PDF描述
MCHC705P6ACSDR2 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER
MC68HC705P6AMP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705P6CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P6P 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705P6DW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MC68HC705P6AMDW 功能描述:IC MCU 4.6K OTP 2.1MHZ 28-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設(shè)備:POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
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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