參數(shù)資料
型號： MC68HC705E5P
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝： PLASTIC, DIP-28
文件頁數(shù)： 16/148頁
文件大?。?/td> 3554K
代理商： MC68HC705E5P
NON-DISCLOSURE
AGREEMENT
REQUIRED
User EPROM
General Release Specification
MC68HC705E5 — Rev. 1.0
User EPROM
13.4 Programming Register
This register is used to program the EPROM array. Only the LATCH and
EPGM bits are available in user mode. To program a byte of EPROM,
set LATCH, write data to the desired address, then set EPGM for tEPGM.
LATCH — EPROM Latch Control
READ:
Any time
WRITE: Any time
0 = EPROM address and data bus configured for normal reads
1 = EPROM address and data bus configured for programming.
Causes address and data bus to be latched when a write to
EPROM is done. EPROM cannot be read if LATCH = 1.
EPGM — EPROM Program Control
READ:
Any time
WRITE: Cleared any time, set only if LATCH = 1
0 = Programming power switched off the EPROM array
1 = Programming power switched on to the EPROM array. If
LATCH = 0, then EPGM is cleared automatically. EPGM
cannot be set if LATCH is not set. LATCH and EPGM cannot
both be set on the same write.
Address:
$0011
Bit 7
654321
Bit 0
Read:
—————
LATCH
0
EPGM
Write:
Reset:
00001000
Figure 13-4. Programming Register (PROG)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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PDF描述
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