參數(shù)資料
型號(hào): HD404391S
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
中文描述: 4位HMCS400系列微電腦(4位單片微計(jì)算機(jī))
文件頁數(shù): 51/100頁
文件大小: 610K
代理商: HD404391S
HD404344R Series/HD404394 Series
51
The timer B interrupt request flag is set by an overflow. Resetting the timer B interrupt request flag
(IFTB: $002, bit 0) is executed by either software or by an MCU reset.
External event counter operation: By setting the external event input as an input clock source, timer B
can operate as an external event counter. The D
0
/
INT
0
/EVNB pins are set to be
INT
0
/EVNB pins by
port mode register B (PMRB: $024).
The detection edge of the external event counter for timer B is selected as rising edge, falling edge, or
rising/falling edge by timer mode register B2 (TMB2: $026). When the rising/falling edge is selected,
the period must be set to more than 2t
cyc
between the falling edge and the rising edge.
Timer B is incremented by 1 using the edge selection in timer mode register B2 (TMB2: $026). Other
functions are based on the free-running/reload timer.
Timer counter B
(TCB)
÷
2
÷
4
÷
8
÷
3
÷
1
÷
5
÷
2
Timer mode
register B2
(TMB2)
EVNB
Selector
System
clock
PER
Prescaler S (PSS)
2
Edge
detector
Edge detection control
3
Timer write
register B lower
(TWBL)
Timer mode
register B1
(TMB1)
Timer write
register B upper
(TWBU)
Clock
Free-running
timer control
Timer read
register B lower
(TRBL)
Interrupt request
flag of timer B
(IFTB)
Timer read
register BU
(TRBU)
Overflow
I
Figure 26 Timer B Free-Running and Reload Operation Block Diagram
相關(guān)PDF資料
PDF描述
HD404392S 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404341R 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404394S 4-bit HMCS400-series microcomputer(4位單片微計(jì)算機(jī))
HD404612 4-Bit Single-Chip Microcomputer
HD404612FS 4-Bit Single-Chip Microcomputer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD404392 制造商:未知廠家 制造商全稱:未知廠家 功能描述:HMCS43XXFamily User's Manual/Device
HD404392FP 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit microcomputers
HD404392FT 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit microcomputers
HD404392S 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:4-bit microcomputers
HD404394 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:4-bit microcomputer has an A/D converter