参数资料
型号: MC68HC05F4CP
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 1.789 MHz, MICROCONTROLLER, PDIP28
封装: PLASTIC, DIP-28
文件页数: 22/130页
文件大小: 2089K
代理商: MC68HC05F4CP
MOTOROLA
A-6
MC68HC05F4
A
ELATCH causes address and data buses to be latched when a write to EPROM is carried out. The
EPROM cannot be read if ELATCH = 1. This bit should not be set unless a programming voltage
is applied to the VPP pin.
A.2.2.2
EPROM programming operation
The following steps should be taken to program a byte of EPROM:
1) Apply the programming voltage VPP to the IRQ pin.
2) Set the ELATCH bit.
3) Write to the EPROM address.
4) Set the EPGM bit for a time tEPGM to apply the programming voltage.
5) Clear the ELATCH bit.
If the address bITs A13–A2 do not change, i.e. all bytes are located within the same 4 byte
address block, then multibyte programming is permitted. The multibyte programming facility allows
up to 4bytes of data to be written to the desired addresses after the ELATCH bit has been set.
A.3
Electrical specications
This section gives the electrical specications for the MC68HC705F4, the EPROM version of the
MC68HC05F4. Contained in this section is the information specic to the MC68HC705F4 which
differs from that detailed in Section 10.
A.3.1
EPROM characteristics
Table A-2 EPROM characteristics
Characteristic
Symbol
Value
Unit
EPROM programming voltage rate
VPP
VSS 0.3 to +17 + 0.5
V
EPROM programming voltage
VPP
typ. 16.0
min. 15.5 max. 16.5
V
EPROM programming time
tEPGM
min. 4.0
ms
TPG
114
05F4Book Page 6 Tuesday, August 5, 1997 1:10 pm
相关PDF资料
PDF描述
MK2731-04S 36.864 MHz, VIDEO CLOCK GENERATOR, PDSO16
MC68HC11F1CFN4R2 8-BIT, EEPROM, 4 MHz, MICROCONTROLLER, PQCC68
MC68HC11KS1CFN3 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PQCC68
MB90F548GPF 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP100
MPD78C11AGQA-XXX-36 8-BIT, MROM, 15 MHz, MICROCONTROLLER, PZIP64
相关代理商/技术参数
参数描述
MC68HC05F5 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05F6 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:MCU with DTMF/melody generator
MC68HC05F6P 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller
MC68HC05F8 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
MC68HC05J1 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT