参数资料
型号: MC68HC08QY4CDWE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO16
封装: 1.27 MM PITCH, LEAD FREE, PLASTIC, MS-013AA, SOIC-16
文件页数: 101/178页
文件大小: 2311K
代理商: MC68HC08QY4CDWE
Read-Only Memory (ROM)
MC68HC08QY/QT Family Data Sheet, Rev. 1
Freescale Semiconductor
29
2.7 Read-Only Memory (ROM)
The ROM memory is intended primarily for program storage.
Consult Table 1-1. Summary of Device Variations for ROM memory sizes available and reference
Figure 2-1 for user program ROM locations.
Forty-eight bytes of user vectors, $FFD0–$FFFF, are dedicated to user-defined reset and interrupt
vectors, not all 48 bytes are used as interrupt vectors for this device. See Table 2-1 for actual vectors used
on this MCU.
Security has been incorporated into the MC68HC08QY/QT Family to prevent external viewing of the ROM
contents. This feature ensures that customer-developed software remains proprietary. No security feature
is absolutely secure. However, Freescale’s strategy is to make reading or copying the ROM difficult for
unauthorized users.
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