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參數(shù)資料
| 型號(hào)： | MC68HC05L1FU |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁(yè)數(shù)： | 99/102頁(yè) |
| 文件大小： | 632K |
| 代理商： | MC68HC05L1FU |
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MOTOROLA
A-4
MC68HC05L1
MC68HC705L1
A
A.4.1
Program Control Register (PCR)
LATA - EPROM Latch Control
1 (set)
–
EPROM address and data bus congured for programming (writes to
EPROM cause address data to be latched). EPROM is in
programming mode and cannot be read if LATA is 1. This bit should
not be set unless a programming voltage is applied to the VPP pin.
0 (clear) –
EPROM address and data bus congured for normal reads.
EPGM - EPROM Program Command
1 (set)
–
Programming power connected to the EPROM array. If LATA not = 1
then EPGM = 0.
0 (clear) –
Programming power disconnected from the EPROM array.
A.4.2
EPROM Programming Sequence
Programming the EPROM of the MC68HC705L1 is as follows:
1) Set the LATA bit.
2) Write the data to be programmed to the address to be programmed.
3) Set the EPGM bit.
4) Delay for 1ms.
5) Clear the EPGM and the LATA bits.
The last action may be carried out in a single CPU write operation. It is important to remember
that an external programming voltage must be applied to the VPP pin while programming, but
should be equal to VDD during normal operation.
Example shows address $1000 is programmed with $00.
CLR
PCR
;reset PCR
LDX
#$00
;load index register with 00
BSET
1,PCR
;set LATA bit
LDA
#$00
;load data = 00 in to A
STA
$1000,X
;latch data and address
BSET
0,PCR
;program
JSR
DELAY
;call delay subroutine for 1ms
CLR
PCR
;reset PCR
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$0E
RESERVED
LATA
EPGM
uuuu uu00
TPG
94
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68HC05L1B | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56 |
| MC68HC705L2B | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP42 |
| MC68HC705L2CB | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP42 |
| MC68HC05L2CB | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42 |
| MC68HC705MC4DW | 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05L2 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| MC68HC05L25 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05L25FA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05L25PB | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05L28 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
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