參數(shù)資料
型號(hào)： MC68HC05G3
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁數(shù)： 66/128頁
文件大?。?/td> 290K
代理商： MC68HC05G3
Page 32
MOTOROLA
Section 3: MEMORY
MC68HC05G3 (705G4) Specification Rev. 1.1
3.7
PROGRAMMING SEQUENCE
Programming the EPROM of the MC68HC705G4 is similar to programming the
MC68HC11A8 EEPROM. The sequence includes:
Setting the ELAT bit
Writing the data to the address to be programmed
Setting the PGM bit
Delaying for an appropriate amount of time
Clearing the PGM and the ELAT bit
The last item may be done on a single CPU write. It is important to remember that an
external programming voltage must be applied to the VPP pin while programming, but it
should be equal to VDD during normal operations.
3.7.1
PROGRAM CONTROL REGISTER (PCR)
Program control register is provided for EPROM programming in the boot modes. This
register is available only in the MC68HC705G4 (EPROM device).
READ:
In user mode, bit 2 through bi 7 read as zero.
WRITE:
bit 2 through bit 7 allowed only when in boot mode
BITS 7-2
Reserved
These bits are reserved for factory testing.
ELAT
EPROM LATch control
0 - EPROM address and data bus configured for normal reads
1 - EPROM address and data bus configured for programming. (Writes to
EPROM cause address and data to be latched. Writes to other
areas will not cause any latching.) EPROM is in programming
mode and cannot be read if ELAT is 1. This bit may not be set
when no VPP voltage is applied to the VPP pin.
PGM
EPROM Program Command
0 - Programming power is switched OFF to EPROM array.
1 - Programming power is switched ON to EPROM array.
-
$003D
-
ELAT
PGM
PCR
B7
B6
B5
B4
B3
B2
B1
B0
00000000
RESET:
相關(guān)PDF資料
PDF描述
MC68HC705J5ACJP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP16
MC68HC705J5ACP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
MC68HC05J5AJDW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO16
MC68HRC705J5ACDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
MC68HRC05J5ADW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05J1 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05J1A 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05J1ACDW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05J1ACP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05J1ADW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
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