參數(shù)資料
型號： M30218MC-XXXXFP
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP100
封裝： PLASTIC, QFP-100
文件頁數(shù)： 43/161頁
文件大?。?/td> 2043K
代理商： M30218MC-XXXXFP
137
Under
development
Tentative Specifications REV.A
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30218 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Pull-down
Power Dissipation Calculating example 3
(when 2 or more digit is turned ON at same time, and used Toff invalid function)
Fixed number depending on microcomputer’s standard
VOH output fall voltage of high-breakdown port 2 V (max.); | Current value | = at 18 mA
Resistor value 68 k
(min.)
Power dissipation of internal circuit (CPU, ROM, RAM etc.) = 5 V X 38 mA = 190 mW
Fixed number depending on use condition
Apply voltage to VEE pin: Vcc – 50 V
Timing number 11; digit number 12; segment number 24
Ratio of Toff time corresponding Tdisp time: 1/16
Turn ON segment number during repeat cycle: 114 ( for Toff invalid waveform;50)
All segment number during repeat cycle: 264 (= 11 X 24)
Total number of built-in resistor: for digit; 10, for segment; 22
Digit pin current value: 18 (mA)
Segment pin current value: 3 (mA)
(1) Digit pin power dissipation
[{18 X 10 X (1–1/16) X 2} + {18 X 2 X 2}] / 11 = 37.23 mW
(2) Segment pin power dissipation
[{3 X 64 X (1–1/16) X 2} + {3 X 50 X 2}] / 11 = 60.00 mW
(3) Pull-down resistor power dissipation (digit)
[{(50– 2)2 / 68 X (10 X 10 / 12) X (1 – 1 / 16)} + {(50– 2)2 / 68 X (2 X 10 / 12) } ] /11 = 29.20 mW
(4) Pull-down resistor power dissipation (segment)
[{(50– 2)2 / 68 X (64 X 22 / 24) X (1 – 1 / 16)} + {(50– 2)2 / 68 X (50 X 22 / 24) } ] / 11 = 310.59 mW
(5) Internal circuit power dissipation (CPU, ROM, RAM etc.) = 190.00 mW
(1) + (2)+ (3) + (4) + (5) = 627.02 mW (There is a limit of use temperature)
Figure S-3. Digit timing waveform (3)
DIG0
DIG1
DIG2
DIG3
DIG7
DIG8
DIG9
Timing
number
12
3
45
6
7
89
10
11
DIG4
DIG5
DIG6
Tscan
Repeat cycle
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