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參數(shù)資料
| 型號(hào)： | HD40L4816 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
| 中文描述： | 4位單片機(jī)（4位單片微計(jì)算機(jī)） |
| 文件頁(yè)數(shù)： | 49/98頁(yè) |
| 文件大小： | 621K |
| 代理商： | HD40L4816 |
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HD404818 Series
49
Timer B Operation:
Timer mode register B (TMB: $009) selects the auto-reload function, input clock
source, and prescaler divide ratio for timer B. When an external event input is used as an input clock signal
to timer B, select R3
3
/
INT
1
as
INT
1
by port mode register A (PMRA: $004) to prevent an external interrupt
request from occurring (figure 26)
Timer B is initialized according to the data written into timer load register B by software. Timer B counts
up at every clock input signal. When the next clock signal is applied to timer B after it is set to $FF, it will
generate an overflow output. In this case, if the auto-reload function is selected, timer B is initialized
according to the value of timer load register B. If it is not selected, timer B goes to $00. The timer B
interrupt request flag (IFTB: $002, bit 0) will be set as this overflow is output.
System
clock
INT
1
Selector
Prescaler S (PSS)
Clock
Timer latch
register BL
(TLBL)
Timer counter B
(TCB)
Timer load
register BU
(TLRU)
Timer load
register BL
(TLRL)
Timer mode
register B
(TMB)
Timer B interrupt
request flag
(IFTB)
3
I
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
2
÷
Free-running
control
Overflow
f
cyc
/f
SUB
(t
cyc
/t
subcyc
)
Timer latch register BU (TLBU)
Figure 26 Timer B Block Diagram
Timer C Operation:
Timer mode register C (TMC: $00D) selects the auto-reload function and the
prescaler divide ratio for timer C.
Timer C is initialized according to the data written into timer load register C by software. Timer C counts
up at every clock input signal. When the next clock signal is applied to timer C after it is set to $FF, it will
generate an overflow output. In this case, if the auto-reload function is selected, timer C is initialized
相關(guān)PDF資料 |
PDF描述 |
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| HD40L4818 | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
| HD404816 | 4-Bit Single-Chip Microcomputer(4位單片微計(jì)算機(jī)) |
| HD404814FS | 16-digit LCD driver |
| HD4074899 | 16-digit LCD driver |
| HD404814H | 16-digit LCD driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD40L4818H | 制造商:Renesas Electronics Corporation 功能描述: |
| HD40-M | 制造商:Tamura Corporation of America 功能描述: |
| HD40WS/EHOOD/PLUG | 制造商:Lapp 功能描述:HD 40 way side entry assembled plug 制造商:Lapp Group 功能描述:HD 40 way side entry assembled plug |
| HD-41494-1 | 功能描述:環(huán)形MIL規(guī)格工具、五金與附件 RoHS:否 制造商:Amphenol Industrial MIL 類型:MIL-DTL-5015 系列:97 產(chǎn)品類型:Dummy Receptacles 用于:97 Series Plugs |
| HD4-15530/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
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