参数资料
型号: MC68HC705J1ACDWR2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封装: SOIC-20
文件页数: 93/162页
文件大小: 1517K
代理商: MC68HC705J1ACDWR2
Technical Data
MC68HC705J1A — Rev. 3.0
36
Memory
MOTOROLA
Memory
2.6 EPROM/OTPROM
A microcontroller unit (MCU) with a quartz window has 1240 bytes of
erasable, programmable ROM (EPROM). The quartz window allows
EPROM erasure with ultraviolet light.
NOTE:
Keep the quartz window covered with an opaque material except when
programming the MCU. Ambient light can affect MCU operation.
In an MCU without the quartz window, the EPROM cannot be erased
and serves as 1240 bytes of one-time programmable ROM (OTPROM).
These addresses are user EPROM/OTPROM locations:
$0300–$07CF
$07F8–$07FF, used for user-defined interrupt and reset vectors
The computer operating properly (COP) register (COPR) is an
EPROM/OTPROM location at address $07F0.
The mask option register (MOR) is an EPROM/OTPROM location at
address $07F1.
2.6.1 EPROM/OTPROM Programming
The two ways to program the EPROM/OTPROM are:
1. Manipulating the control bits in the EPROM programming register
to program the EPROM/OTPROM on a byte-by-byte basis
2. Programming the EPROM/OTPROM with the M68HC705J
in-circuit simulator (M68HC705JICS) available from Motorola
相关PDF资料
PDF描述
MC68HRC705J1AVS 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20
MC68B09CP 8-BIT, 2 MHz, MICROPROCESSOR, PDIP40
MPC603FIM300D 32-BIT, 300 MHz, RISC PROCESSOR, CPGA288
MPC603FIP200C 32-BIT, 200 MHz, RISC PROCESSOR, CPGA288
MPC603FRC200D 32-BIT, 200 MHz, RISC PROCESSOR, CPGA288
相关代理商/技术参数
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