參數(shù)資料
型號(hào): MC68HC705C9ACP
廠商: Freescale Semiconductor
文件頁數(shù): 40/118頁
文件大小: 0K
描述: IC MCU 2.1MHZ 16K OTP 40-DIP
標(biāo)準(zhǔn)包裝: 9
系列: HC05
核心處理器: HC05
芯體尺寸: 8-位
速度: 2.1MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 24
程序存儲(chǔ)器容量: 16KB(16K x 8)
程序存儲(chǔ)器類型: OTP
RAM 容量: 352 x 8
電壓 - 電源 (Vcc/Vdd): 3 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
Memory
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
28
Freescale Semiconductor
2.4 EPROM Security
A security feature has been incorporated into the MC68HC705C9A to help prevent external access to the
contents of the EPROM in any mode of operation. Once enabled, this feature can be disabled only by
completely erasing the EPROM.
NOTE
For OTP (plastic) packages, once the security feature has been enabled, it
cannot be disabled.
2.5 ROM
The bootloader ROM occupies 239 bytes in the memory space from $3F00 to $3FEF. The bootloader
mode provides for self-programming of the EPROM array. See Appendix A EPROM Programming.
2.6 I/O Registers
Except for the option register, mask option registers, and the C12 COP clear register, all I/O, control and
status registers are located within one 32-byte block in page zero of the address space ($0000–$001F).
A summary of these registers is shown in Figure 2-3. More detail about the contents of these registers is
given Figure 2-4.
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