- 您現(xiàn)在的位置：買賣IC網 > PDF目錄45222 > MC68HC05P9ACDW (MOTOROLA INC) 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 PDF資料下載
參數資料
| 型號： | MC68HC05P9ACDW |
| 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, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數： | 41/90頁 |
| 文件大?。?/td> | 285K |
| 代理商： | MC68HC05P9ACDW |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁當前第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁
GENERAL RELEASE SPECIFICATION
MOTOROLA
TIMER
MC68HC05P9A
8-2
Rev. 2.0
8.1
Counter
The key element in the programmable timer is a 16-bit, free-running counter or
counter register, preceded by a prescaler that divides the internal processor clock
by four. The prescaler gives the timer a resolution of 2.0 microseconds if the
internal bus clock is 2.0 MHz. The counter is incremented during the low portion
of the internal bus clock.
Software can read the counter at any time without
affecting its value.
The double-byte, free-running counter can be read from either of two locations,
$18-$19 (counter register) or $1A-$1B (counter alternate register). A read from
only the least signicant byte (LSB) of the free-running counter ($19, $1B)
receives the count value at the time of the read. If a read of the free-running
counter or counter alternate register rst addresses the most signicant byte
(MSB) ($18, $1A), the LSB ($19, $1B) is transferred to a buffer. This buffer value
remains xed after the rst MSB read, even if the user reads the MSB several
Figure 8-1. Timer Block Diagram
Input
Capture
Register
Clock
Internal Bus
Output
Compare
Register
High
Byte
Low
Byte
$16
$17
/4
Internal
Processor
16-Bit Free
Running
Counter
Alternate
Register
8-Bit
Buffer
High
Byte
Low
Byte
$1A
$1B
$18
$19
High
Byte
Low
Byte
$14
$15
Output
Compare
Circuit
Overflow
Detect
Circuit
Edge
Detect
Circuit
Timer
Status
Reg.
ICF OCF TOF $13
ICIE
IEDG OLVL
Output
Level
Reg.
RESET
Timer
Control
Reg.
$12
Output
Level
(TCMP)
Interrupt
Circuit
TOIE
OCIE
Edge
Input
(TCAP)
D
CLK
C
Q
相關PDF資料 |
PDF描述 |
|---|---|
| MC68HC05P9P | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
| MC68HC05P9CDW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| MC68HC05PD6 | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80 |
| MC68HC705PD6 | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP80 |
| MC68HC05PE0P | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68HC05P9ACP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9AMDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9AMP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9AP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
發(fā)布緊急采購，3分鐘左右您將得到回復。