參數(shù)資料
型號： MC68HC705JP7S
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP28
封裝： WINDOWED, CERAMIC, DIP-28
文件頁數(shù)： 23/164頁
文件大?。?/td> 1165K
代理商： MC68HC705JP7S
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
119
Chapter 13
EPROM/OTPROM
13.1 Introduction
This section describes how to program the 6160-byte erasable programmable read-only
memory/one-time programmable read-only memory (EPROM/OTPROM), the mask option register
(MOR), and the EPROM security bit (EPMSEC).
NOTE
In packages with no quartz window, the EPROM functions as one-time
programmable ROM (OTPROM).
13.2 EPROM Registers
The EPROM programming register (EPROG) controls the actual programming of the EPROM bytes and
the mask option register (MOR). The MOR controls eight mask options found on the read-only memory
(ROM) version of this microcontroller unit (MCU). There is an additional EPROM bit (EPMSEC) located
at the computer operating properly (COP) address to provide EPROM array security.
13.2.1 EPROM Programming Register
The EPROM programming register (EPROG) shown in Figure 13-1 contains the control bits for
programming the EPROM. In normal operation, the EPROM programming register contains all logic 0s.
EPGM — EPROM Programming Bit
This read/write bit applies the voltage from the IRQ/VPP pin to the EPROM. To write the EPGM bit, the
ELAT bit must already be set. Clearing the ELAT bit also clears the EPGM bit. Reset clears EPGM.
1 = EPROM programming power switched on
0 = EPROM programming power switched off
MPGM — Mask Option Register (MOR) Programming Bit
This read/write bit applies programming power from the IRQ/VPP pin to the MOR. Reset clears MPGM.
1 = MOR programming power switched on
0 = MOR programming power switched off
Address:
$001C
Bit 7
654321
Bit 0
Read:
00000
ELAT
MPGM
EPGM
Write:
RRRR
Reset:
00000000
= Unimplemented
R
= Reserved for test
Figure 13-1. EPROM Programming Register (EPROG)
相關(guān)PDF資料
PDF描述
MC68HRC705JP7CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705SP7CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705JP7CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705JJ7CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
MC68HC705JJ7CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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MC68HC705L5FUE 功能描述:8位微控制器 -MCU 705L5-EPP-80QFP-6019 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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