- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98145 > ST72621J2T1 (STMICROELECTRONICS) 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 PDF資料下載
參數(shù)資料
| 型號(hào)： | ST72621J2T1 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | 0.300 INCH, PLASTIC, SO-20 |
| 文件頁(yè)數(shù)： | 80/136頁(yè) |
| 文件大?。?/td> | 2475K |
| 代理商： | ST72621J2T1 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)當(dāng)前第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)
ST7262
48/136
PWM AUTO-RELOAD TIMER (Cont’d)
10.2.3 Register Description
CONTROL / STATUS REGISTER (CSR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7 = EXCL External Clock
This bit is set and cleared by software. It selects the
input clock for the 7-bit prescaler.
0: CPU clock.
1: External clock.
Bit 6:4 = CC[2:0] Counter Clock Control
These bits are set and cleared by software. They
determine the prescaler division ratio from fINPUT.
Bit 3 = TCE Timer Counter Enable
This bit is set and cleared by software. It puts the
timer in the lowest power consumption mode.
0: Counter stopped (prescaler and counter frozen).
1: Counter running.
Bit 2 = FCRL Force Counter Re-Load
This bit is write-only and any attempt to read it will
yield a logical zero. When set, it causes the contents
of ARR register to be loaded into the counter, and
the content of the prescaler register to be cleared in
order to initialize the timer before starting to count.
Bit 1 = OIE Overflow Interrupt Enable
This bit is set and cleared by software. It allows to
enable/disable the interrupt which is generated
when the OVF bit is set.
0: Overflow Interrupt disable.
1: Overflow Interrupt enable.
Bit 0 = OVF Overflow Flag
This bit is set by hardware and cleared by software
reading the CSR register. It indicates the transition
of the counter from FFh to the ARR value.
0: New transition not yet reached
1: Transition reached
COUNTER ACCESS REGISTER (CAR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:0 = CA[7:0] Counter Access Data
These bits can be set and cleared either by hard-
ware or by software. The CAR register is used to
read or write the auto-reload counter “on the fly”
(while it is counting).
AUTO-RELOAD REGISTER (ARR)
Read/Write
Reset Value: 0000 0000 (00h)
Bit 7:0 = AR[7:0] Counter Auto-Reload Data
These bits are set and cleared by software. They
are used to hold the auto-reload value which is au-
tomatically loaded in the counter when an overflow
occurs. At the same time, the PWM output levels
are changed according to the corresponding OPx
bit in the PWMCR register.
This register has two PWM management func-
tions:
– Adjusting the PWM frequency
– Setting the PWM duty cycle resolution
PWM Frequency vs. Resolution:
70
EXCL
CC2
CC1
CC0
TCE
FCRL
OIE
OVF
fCOUNTER
With fINPUT=8 MHz CC2 CC1 CC0
fINPUT
fINPUT / 2
fINPUT / 4
fINPUT / 8
fINPUT / 16
fINPUT / 32
fINPUT / 64
fINPUT / 128
8 MHz
4 MHz
2 MHz
1 MHz
500 KHz
250 KHz
125 KHz
62.5 KHz
0
1
0
1
0
1
0
1
0
1
0
1
0
1
70
CA7
CA6
CA5
CA4
CA3
CA2
CA1
CA0
70
AR7
AR6
AR5
AR4
AR3
AR2
AR1
AR0
ARR value
Resolution
fPWM
Min
Max
0
8-bit
~0.244-KHz
31.25-KHz
[ 0..127 ]
> 7-bit
~0.244-KHz
62.5-KHz
[ 128..191 ]
> 6-bit
~0.488-KHz
125-KHz
[ 192..223 ]
> 5-bit
~0.977-KHz
250-KHz
[ 224..239 ]
> 4-bit
~1.953-KHz
500-KHz
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST72P621L4M1 | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO34 |
| ST72623F2M1L | 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO34 |
| ST7263BK1B/XXX | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP32 |
| ST72652AR4T1/XXX | 8-BIT, MROM, MICROCONTROLLER, PQFP64 |
| ST72651AR6T1E/XXX | 8-BIT, MROM, MICROCONTROLLER, PQFP64 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST7263-EMU2 | 功能描述:仿真器/模擬器 ST7 Emulator Board RoHS:否 制造商:Blackhawk 產(chǎn)品:System Trace Emulators 工具用于評(píng)估:C6000, C5000, C2000, OMAP, DAVINCI, SITARA, TMS470, TMS570, ARM 7/9, ARM Cortex A8/R4/M3 用于:XDS560v2 |
| ST7265X-EVAL/MS | 制造商:STMicroelectronics 功能描述:ST6 EVAL BD - Bulk |
| ST7265X-EVAL/PFD | 制造商:STMicroelectronics 功能描述:USB FLASH EVAL - Bulk |
| ST7266 | 制造商:6940 功能描述:ST7266 |
| ST7267C8T1L | 制造商:STMicroelectronics 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。