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参数资料
| 型号： | MC68HC05SR3CB |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP42 |
| 封装： | SDIP-42 |
| 文件页数： | 88/96页 |
| 文件大小： | 612K |
| 代理商： | MC68HC05SR3CB |
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MC68HC05SR3
MOTOROLA
A-3
MC68HC705SR3
A
A.4.1
EPROM Programming
Programming boards are available from Motorola for programming the on-chip EPROM. Please
contact your Motorola Representative.
The Programming Control register (PCR) is provided for EPROM programming. The function of
the EPROM depends on the device operating mode.
A.4.2
Program Control Register (PCR)
ELAT - 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 ELATA 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.
PGM - EPROM Program Command
1 (set)
–
Programming power connected to the EPROM array. If ELAT
≠ 1 then
PGM = 0.
0 (clear) –
Programming power disconnected from the EPROM array.
A.4.3
EPROM Programming Sequence
Programming the EPROM of the MC68HC705SR3 is as follows:
1) Set the ELAT bit.
2) Write the data to be programmed to the address to be programmed.
3) Set the PGM bit.
4) Delay for 1ms.
5) Clear the PGM and the ELAT 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 $1900 is programmed with $00.
Address
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
State
on reset
$0D
RESERVED
ELAT
PGM
---- --00
TPG
87
相关PDF资料 |
PDF描述 |
|---|---|
| MC68HC05SR3CP | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP40 |
| MC68HC705SR3B | 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP42 |
| MC68HC05SR3FB | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP44 |
| MC68HC05SR3P | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP40 |
| MC68HC705SR3CFB | 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HC05SU3A | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Fully static chip design featuring the industry standard 8-bit M68HC05 core |
| MC68HC05T16 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor (HCMOS) microcontroller unit |
| MC68HC05V12 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontreller Unit |
| MC68HC05V12CFN | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| MC68HC05X16 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor HCMOS) microcontroller unit |
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