參數(shù)資料
型號: MC68HC05C9AP
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, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 78/162頁
文件大?。?/td> 1093K
代理商: MC68HC05C9AP
N
O
N-D
I
SC
L
O
SU
R
E
AG
R
EEMENT
R
E
Q
U
IR
ED
General Description
Advance Information
MC68HC05C9A Rev. 5.0
22
General Description
MOTOROLA
1.5 Software-Programmable Options
The option register (OR), shown in Figure 1-2, contains the
programmable bits for these options:
Map two different areas of memory between RAM and ROM, one
of 48 bytes and one of 128 bytes
Edge-triggered only or edge- and level-triggered external interrupt
(IRQ pin and any port B pin configured for interrupt)
This register must be written to by user software during operation of the
microcontroller.
RAM0 — Random-Access Memory Control Bit 0
This read/write bit selects between RAM or ROM in location $0020 to
$004F. This bit can be read or written at any time.
1 = RAM selected
0 = ROM selected
RAM1— Random-Access Memory Control Bit 1
This read/write bit selects between RAM or ROM in location $0100 to
$017F. This bit can be read or written at any time.
1 = RAM selected
0 = EPROM selected
IRQ — Interrupt Request Bit
This bit selects between an edge-triggered only or edge- and level-
triggered external interrupt. This bit is set by reset, but can be cleared
by software. This bit can be written only once.
1 = Edge and level interrupt option selected
0 = Edge-only interrupt option selected
Address:
$3FDF
Bit 7
6
54321
Bit 0
Read:
RAM0
RAM1
0000
IRQ
0
Write:
Reset:
00
000010
= Unimplemented
Figure 1-2. Option Register
相關(guān)PDF資料
PDF描述
MC68HSC05C9AB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP42
MC68HC05C9AFN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HSC05C9ACB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP42
MC68HSC05C9AFB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP44
MC68HCL05C9AFN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05C9CP 制造商:Motorola Inc 功能描述:IC UP HCMOS 68HC05C9CP DIP40 0
MC68HC05C9E 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9ECFB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9ECP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05CT4FB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification