參數(shù)資料
型號(hào)： M37905M4C
廠商： Mitsubishi Electric Corporation
英文描述： DIODE SCHOTTKY DUAL COMMON-ANODE 25V 200mW 0.32V-vf 200mA-IFM 1mA-IF 2uA-IR SOT-323 3K/REEL
中文描述： 16位CMOS微機(jī)
文件頁(yè)數(shù)： 26/102頁(yè)
文件大?。?/td> 881K
代理商： M37905M4C
26
M37905M4C-XXXFP, M37905M4C-XXXSP
M37905M6C-XXXFP, M37905M6C-XXXSP
M37905M8C-XXXFP, M37905M8C-XXXSP
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
16-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
TIMER
There are eight 16-bit timers. They are divided by type into timer A
(10) and timer B (3).
The timer I/O pins are multiplexed with I/O pins for ports P2, P4, P5
and P6. To use these pins as timer input pins, the port direction reg-
ister bit corresponding to the pin must be cleared to
“
0
”
to specify
input mode.
TIMER A
Figure 18 shows a block diagram of timer A.
Timer A has four modes: timer mode, event counter mode, one-shot
pulse mode, and pulse width modulation mode. The mode is se-
lected with bits 0 and 1 of the timer Ai mode register (i = 0 to 9). Each
of these modes is described below.
Figure 19 shows the bit configuration of the timer A clock division se-
lect register. Timers A0 to A9 use the count source which has been
selected by bits 0 and 1 of this register.
(1) Timer mode [00]
Figure 20 shows the bit configuration of the timer Ai mode register in
the timer mode. Bits 0, 1 and 5 of the timer Ai mode register must be
“
0
”
in timer mode. The timer A
’
s count source is selected by bits 6
and 7 of the timer Ai mode register and the contents of the timer A
clock division select register. (See Table 7.)
The counting of the selected clock starts when the count start bit is
“
1
”
and stops when it is
“
0
”
.
Figure 21 shows the bit configuration of the count start bit. The
counter is decremented, an interrupt is caused and the interrupt re-
quest bit in the timer Ai interrupt control register is set when the con-
tents becomes 0000
16
. At the same time, the contents of the reload
register is transferred to the counter and count is continued.
Fig. 18 Block diagram of timer A
Timer
One-shot pulse
Pulse width
Count start registers 0, 1
(Addresses 40
16
, 41
16
)
Countdown
Data bus (odd)
Data bus (even)
Reload register(16)
Counter (16)
(Low-order 8 bits)
(High-order 8 bits)
“Countdown” is always
selected when not in the
event counter mode.
Timer A0 47
16
46
16
Timer A1 49
16
48
16
Timer A2 4B
16
4A
16
Timer A3 4D
16
4C
16
Timer A4 4F
16
4E
16
Countup/Countdown switching
Toggle flip-flop
Up-down registers 0, 1
(Addresses 44
16
, C4
16
)
Polarity
selection
Addresses
External trigger
Event counter
TAi
IN
(i = 0–9)
TAi
OUT
(i = 0–9)
Timer (gate function)
Count source
select bits
Pulse output
f
1
f
2
f
16
f
64
f
512
f
4096
Timer A clock
division select bit
Timer A5 C7
16
C6
16
Timer A6 C9
16
C8
16
Timer A7 CB
16
CA
16
Timer A8 CD
16
CC
16
Timer A9 CF
16
CE
16
Addresses
相關(guān)PDF資料
PDF描述
M37905M4C-XXXFP 16 BIT CMOS MICROCOMPUTER
M37905M4C-XXXSP 16 BIT CMOS MICROCOMPUTER
M37905M6C-XXXFP DIODE SCHOTTKY DUAL-DUAL SERIES 25V 200mW 0.32V-vf 200mA-IFM 1mA-IF 2uA-IR SOT-363 3K/REEL
M37905M6C-XXXSP DIO, BAT54C, DUAL SHOTTKEY, COMMON CATHODE, SOT23
M37905M8C-XXXFP 16 BIT CMOS MICROCOMPUTER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37905M4C-XXXFP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16 BIT CMOS MICROCOMPUTER
M37905M4C-XXXSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16 BIT CMOS MICROCOMPUTER
M37905M6C-XXXFP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16 BIT CMOS MICROCOMPUTER
M37905M6C-XXXSP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16 BIT CMOS MICROCOMPUTER
M37905M8C-XXXFP 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:16 BIT CMOS MICROCOMPUTER
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