參數(shù)資料
型號: MC68HC05F4FB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 1.789 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 22/130頁
文件大?。?/td> 2089K
代理商: MC68HC05F4FB
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
相關(guān)PDF資料
PDF描述
MC68HC05F5FN 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC44
MC68HC05F5P 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP40
MC68HC05F5CFN 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC44
MC68HC05F8B 8-BIT, MROM, 1.8 MHz, MICROCONTROLLER, PDIP56
MC68HC05F8FU 8-BIT, MROM, 1.8 MHz, MICROCONTROLLER, PQFP64
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05F5 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05F6 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:MCU with DTMF/melody generator
MC68HC05F6P 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
MC68HC05F8 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
MC68HC05J1 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT