- 您现在的位置：买卖IC网 > PDF目录45036 > M37548G2FP 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 PDF资料下载
参数资料
| 型号： | M37548G2FP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| 封装： | 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20 |
| 文件页数： | 25/86页 |
| 文件大小： | 1437K |
| 代理商： | M37548G2FP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页当前第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页
Rev.2.02
Mar 31, 2009
Page 29 of 81
REJ03B0210-0202
7548 Group
Timer A (TA)
Timer A is a 16-bit timer and counts the signal selected by the
timer A count source selection bit.
The count source of Timer A can be selected from among
φSOURCE/2, /16, /32, /64, /128, /256, low-speed on-ship
oscillator clock, and XCIN input clock.
Timer A counts the selected count source and sets the timer A
interrupt request bit to “1”.
When writing to timer A, the setting value of the timer A write
control bit can be used to select a write to both the timer A latch
and timer or a write to only the timer A latch.
Reading from timer A reads the timer A count value.
Be sure to write to and read from the low-order and the higher
order of timer A in the following order:
Read
Read the high-order of Timer A (TAH) first, and the low-
order of Timer A (TAL) next. Always read both of the
registers.
Write
Write to the low-order of Timer A (TAL) first and the
high-order of Timer A next. Always read both of the
registers.
Counting starts from “FFFF16” after reset.
The division ratio of timer A is 1/(n+1), where n is the timer A
setting value. Timer A stops when the timer A count stop bit is
set to “1”.
Timer A can be used as the timing timer for input capture and
output compare functions.
Notes
(1) Timer Value Setting
When the timer A write control bit is set to “write to only latch”,
written data is written to only to the latch even when the timer is
stopped. To set the initial setting value when the timer is stopped,
select “Write to timer and latch simultaneously” beforehand.
(2) Reading from and Writing to Timer A
If the timer A count source clock and
φSOURCE are different
clocks, timer A cannot be read or written during its counting.
Select the same clock or set timer A to stop counting to enable
read and write operations.
Timer A cannot be read/written in the following conditions:
Timer A count source: XCIN input clock
φSOURCE: Clock other than XCIN input clock
or
Timer A count source: Low-speed on-chip oscillator output
φSOURCE: Clock other than low-speed on-chip oscillator
(3) Count Source of Timer A
The XCIN input clock can be selected as the count source of timer
A only if the 32 kHz quartz crystal oscillator is selected by the
oscillation method selection bit in FSROM1.
Fig 29. Block diagram of timer A
Data bus
Low-speed on-chip
oscillator output
φSOURCE/256
φSOURCE/128
φSOURCE/64
φSOURCE/32
φSOURCE/16
φSOURCE/2
Timer A (low-order) latch (8)
XCIN input clock
(32 kHz quart
crystal oscillator)
Timer A (high-order) latch (8)
Timer A (low-order) (8)
Timer A (high-order) (8)
Timer A write
control bit
Timer A interrupt
request
Compare
Capture
Timer A count
stop bit
Timer A
count source
selection bits
相关PDF资料 |
PDF描述 |
|---|---|
| M37548G1FP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO20 |
| M37549G1-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
| M37549G3-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDSO24 |
| M37560M8-XXXFP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100 |
| M37560MF-XXXGP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M37548G2-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37548G3FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37548G3FP#U0 | 功能描述:MCU 6K ROM 256K 20-SSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:740/38000 标准包装:250 系列:LPC11Uxx 核心处理器:ARM? Cortex?-M0 芯体尺寸:32-位 速度:50MHz 连通性:I²C，Microwire，SPI，SSI，SSP，UART/USART，USB 外围设备:欠压检测/复位，POR，WDT 输入/输出数:40 程序存储器容量:96KB（96K x 8） 程序存储器类型:闪存 EEPROM 大小:4K x 8 RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):1.8 V ~ 3.6 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:48-LQFP 包装:托盘 其它名称:568-9587 |
| M37548G3-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37549G1FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
发布紧急采购，3分钟左右您将得到回复。