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参数资料
| 型号： | M34283G2-XXXGP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, 4 MHz, MICROCONTROLLER, PDSO20 |
| 封装： | 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20 |
| 文件页数： | 7/41页 |
| 文件大小： | 441K |
| 代理商： | M34283G2-XXXGP |
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Rev.1.01
Mar 20, 2006
page 13 of 62
REJ03B0109-0101
4283 Group
Table 4 Control registers related to timer
V12
V11
V10
Timer control register V1
Auto-control output by timer 1 is invalid
Auto-control output by timer 1 is valid
Carrier wave output (CARRY)
Bit 5 of watchdog timer (WDT)
Stop (Timer 1 state retained)
Operating
0
1
0
1
0
1
Carrier wave output auto-control bit
Timer 1 count source selection bit
Timer 1 control bit
at reset : 0002
W
at RAM back-up : 0002
V23
V22
V21
V20
Timer control register V2
To expand “H” interval is invalid
To expand “H” interval is valid (when V22=1 selected)
Carrier wave generation function invalid
Carrier wave generation function valid
f(XIN)
f(XIN)/2
Stop (Timer 2 state retained)
Operating
0
1
0
1
0
1
0
1
Carrier wave “H” interval expansion bit
Carrier wave generation function control bit
Timer 2 count source selection bit
Timer 2 control bit
at reset : 00002
W
at RAM back-up : 00002
Note: “W” represents write enabled.
(1) Control registers related to timer
Timer control register V1
Register V1 controls the timer 1 count source and auto-
control function of carrier wave output from port CARR by
timer 1. Set the contents of this register through register A
with the TV1A instruction.
Timer control register V2
Register V2 controls the timer 2 count source and the carrier
wave generation function by timer. Set the contents of this
register through register A with the TV2A instruction.
(2) Precautions
Note the following for the use of timers.
Count source
Stop timer 1 or timer 2 counting to change its count source.
Reading the count value
Stop timer 1 or 2 counting and then execute the data read
instruction (TAB1, TAB2) to read its data.
Watchdog timer
Be sure that the timing to execute the WRST instruction in
order to operate WDT efficiently.
Writing to reload register R1
When writing data to reload register R1 while timer 1 is
operating, avoid a timing when timer 1 underflows.
Timer 1 count operation
When the bit 5 of the watchdog timer (WDT) is selected as
the timer 1 count source, the error of maximum ± 256
s
(at the minimum instruction execution time : 8
s) is
generated from timer 1 start until timer 1 underflow. When
programming, be careful about this error.
Stop of timer 2
Avoid a timing when timer 2 underflows to stop timer 2.
Writing to reload register R2H
When writing data to reload register R2H while timer 2 is
operating, avoid a timing when timer underflows.
Timer 2 carrier wave output function
When to expand “H” interval of carrier wave is valid, set “1”
or more to reload register R2H.
Timer 1 and timer 2 carrier wave output function
Count starts from the rising edge in Fig. 14 after the first
falling edge of the count source, after timer 1 and timer 2
operations start ① in Fig. 14.
Time to first underflow ③ in Fig. 14 is different from time
among next underflow ④ in Fig. 14 by the timing to start the
timer and count source operations after count starts.
Fig. 14 Count start time and count time when operation
starts (T1, T2)
3
21
032
103
→
Timer start
Count source
Timer value
Timer underflow signal
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相关代理商/技术参数 |
参数描述 |
|---|---|
| M34286 | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34286G2GP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34286G2GP#U0 | 功能描述:MCU 1.8/3.6V 2KB ROM 20-LSSOP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:720/4500 标准包装:38 系列:Encore!® XP® 核心处理器:eZ8 芯体尺寸:8-位 速度:5MHz 连通性:IrDA，UART/USART 外围设备:欠压检测/复位，LED，POR，PWM，WDT 输入/输出数:16 程序存储器容量:4KB（4K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:1K x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 3.6 V 数据转换器:- 振荡器型:内部 工作温度:-40°C ~ 105°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:管件 其它名称:269-4116Z8F0413SH005EG-ND |
| M34286G2GP#WC | 制造商:Renesas Electronics Corporation 功能描述:4BIT MCU |
| M34286G2-XXXGP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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