 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
M38B71M1 Datasheet(PDF) 44 Page - Renesas Technology Corp |
|
||||||||||||||||||||||||||||||
M38B71M1 Datasheet(HTML) 44 Page - Renesas Technology Corp |
|
|
44 / 110 page 
38B7 Group SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER MITSUBISHI MICROCOMPUTERS 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 P64 to P67 expansion 52 segment ✕ 16 digit (segment number ≤ 52, digit number ≤ 16) • 4.0 µs to 1024 µs (count source XIN/16, 4 MHz) • 16.0 µs to 4096 µs (count source XIN/64, 4 MHz) • 4.0 µs to 1024 µs (count source XIN/16, 4 MHz) • 16.0 µs to 4096 µs (count source XIN/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 DIMOUT(P73) 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. • P64 to P67 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 FLD controller port High-breakdown- voltage output port CMOS port Display pixel number Period Dimmer time Interrupt Key-scan Expanded function Table 9 FLD controller specifications |
English ▼
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
