參數(shù)資料
型號: M38B79MFH
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機(jī)
文件頁數(shù): 43/109頁
文件大?。?/td> 1559K
代理商: M38B79MFH
38B7 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
43
FLD CONTROLLER
The M38B7 group has fluorescent display (FLD) drive and control
circuits.
Table 9 shows the FLD controller specifications.
Specifications
52 pins (20 pins can be switched to general-purpose ports)
4 pins (all 4 pins can be switched to general-purpose ports)
(A driver IC must be installed externally)
Used FLD output
28 segment
28 digit (segment number + digit number
56)
Used digit output
40 segment
16 digit (segment number
40, digit number
16)
Connected to M35501
56 segment
(connected number of M35501) digit
(segment number
56, digit number
number of M35501
16)
Used P6
4
to P6
7
expansion
52 segment
16 digit (segment number
52, digit number
16)
4.0
μ
s to 1024
μ
s (count source X
IN
/16, 4 MHz)
16.0
μ
s to 4096
μ
s (count source X
IN
/64, 4 MHz)
4.0
μ
s to 1024
μ
s (count source X
IN
/16, 4 MHz)
16.0
μ
s to 4096
μ
s (count source X
IN
/64, 4 MHz)
Digit interrupt
FLD blanking interrupt
Key-scan using digit
Key-scan using segment
Digit pulse output function
This function automatically outputs digit pulses.
M35501 connection function
The number of digits can be increased easily by using the output of DIM
OUT
(P7
3
) as CLK for the
M35501.
Toff section generating/nothing function
This function does not generate Toff1 section when the connected outputs are the same.
Gradation display function
This function allows each segment to be set for dark or bright display.
P6
4
to P6
7
expansion function
This function provides 16 lines of digit outputs from four ports by attaching the decoder converting
4-bit data to 16-bit data.
Item
High-breakdown-
voltage output port
CMOS port
FLD
controller
port
Display pixel number
Period
Dimmer time
Interrupt
Key-scan
Expanded function
Table 9 FLD controller specifications
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