ml9227 Oki Semiconductor, ml9227 Datasheet
ml9227
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ml9227 Summary of contents
Page 1
... The ML9227 is a full CMOS controller/driver for Duplex or Triplex vacuum fluorescent display tube. It conststs of 27-segment driver outputs and 3-grid pre-driver outputs, so that it can drive directly up to 81-segment VFD. ML9227 features a digital dimming function, a 6-ch ADC × 5 key scan circuit and an encoder type switch interface. ...
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... Shift Register POR POR 10 bit Digital POR Timing Generator 5 × 5 Key Scan and Encoder Switch Interface 5H 6H COL1 COL5 ROW1 FEDL9227-01 ML9227 GRID1 GRID2 GRID3 3 Grid pre Driver in1-27 Out1-27 Segment Latch 3 in1-27 in1-10 Out1-10 Dimming DIM OUT SYNC OUT1 ...
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... COL3 16 COL4 17 COL5 NC: No connection (OPEN) 64-pin Plastic QFP FEDL9227-01 ML9227 V DISP SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 CH6 CH5 CH4 CH3 CH2 CH1 VREG 3/26 ...
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... Normally low level is output through these pin. When any switch of key matrix is depressed or released, key scanning is started and is continued until key scan stop mode is selected. When key scan stop mode is selected, all outputs of ROW1 back to low level. FEDL9227-01 ML9227 level. CC 4/26 ...
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... Connect this pin to the slave side DIM IN pin. Synchronous signal input Connect these pins to the SYNC IN1 and SYNC IN2 pins of a slave side. RC oscillator connecting pins. Oscillation frequency depends on display tubes to be used. For details refer to ELECTRICAL CHARACTERISTICS. OPEN pins. FEDL9227-01 ML9227 OSC0 Co 5/26 ...
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... DIM OUT, SYNC OUT1, SYNC OUT2 Condition — All inputs except OSC0 All inputs except OSC0 — kΩ ±5%, Co ±5% 1/3 Duty kΩ ± ±5% 1/2 Duty — FEDL9227-01 ML9227 Rating Unit –0.3 to +20 V –0.3 to +6.0 V 250 mW –55 to +150 °C –10.0 to +2.0 mA – ...
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... OL2 V = 9.5V DISP GRID1 OL3 = 300 µA *5) l OL4 kΩ ±5%, Co ±5% V DISP no load C = 0.01 µF ±10 – FEDL9227-01 ML9227 = 8.0 to 18.5 V) DISP Min. Max. Unit 3.8 — V — 0.8 V µA –5.0 +5.0 µA –70 –5.0 µA –5.0 +5.0 µA –160 – ...
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... 80 =100 20 Mounted in a unit PRZ t Mounted in a unit, V POF DISP — FEDL9227-01 ML9227 = 8.0 to 18.5 V) DISP Min. Max. Unit — 2.0 MHz 200 — ns 200 — ns 200 — ns µs 20 — 200 — ns 200 — ...
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... DISP t RSOFF CS Driver Output Timing t R SEG1-27, GRID1-3 1 VALID POF t F FEDL9227-01 ML9227 –3 CSL –0 CSH –3.8 V –0.8 V –3.8 V VALID –0.8 V –3.8 V –0 CSH –3.8 V –0.8 V –3.8 V –0.8 V –0.8 V –0.0 V –3.8 V –0.0 V –0.8 V – ...
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... Digital output "000H" to "001H" changes, and the deviation of the ideal conversion characteristic of a point and the actual conversion characteristic is said. Digital output "0FEH" to "0FFH" changes, and the deviation of the ideal conversion characteristic of a point and the actual conversion characteristic is said. FEDL9227-01 ML9227 = 8.0 to 18.5 V) DISP Min. Typ. Max. Unit 4.5 5 ...
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... kΩ ±5 ± kΩ ±5 ±5% (Ta = –40 to +85°C, V Condition kΩ ±5 ±5% tABH tABW tABW Key scan Cycle Time Key scan Pulse Width FEDL9227-01 ML9227 = 8.0 to 18.5 V) DISP Min. Typ. Max. Unit µs 160 194 246 µs ...
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... OSC 3072 bit times(1 display cycle) 8 bit times 8 bit times 1016 bit times 1016 bit times 64 bit times 64 bit times FEDL9227-01 ML9227 V DISP D-GND 8 bit times V DISP D-GND V DISP D-GND V DISP D-GND ...
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... The output data from the DATA I/O pin is output from the shift register at the rising edge of the serial clock. ML9227 outputs 48-bit (6ch × 8bits) A/D data (A11 to A68) and 29-bit key data (S11 to S55, R1 and Q1 to Q3). To receive these data, the mode data (M0 to M2) must be sent first and then CS must be set once to Low level and set again to High level ...
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... OKI Semiconductor Segment Data Input [Function Mode • ML9227 receives the segment data when function mode are selected. • The same segment data is transferred to the 3 segment data latch correspond to GRID1 the same time when the function mode 0 is selected. ...
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... OKI Semiconductor Digital Dimming Data Input [Function Mode: 4] • ML9227 receives the digital dimming data when function mode 4 is selected. • The output duty changes in the range of 0/1024 (0%) to 1016/1024 (99.2%) for each grid. • The 10-bit digital dimming data is input from LSB. ...
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... To select this mode, the only mode data (M0 to M2) is needed. • When ML9227 recieves this mode, the DATA I/O pin is changed to an output pin. • 29-bit switch data come out from the DATA I/O pin synchronizing with the rise edge of the clock. ...
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... To stop key scanning required to select the key scan stop mode once again. Depress Key scan INT CS MODE5 MODE5 : Key scan stop 1 Cycle Depress Release FEDL9227-01 ML9227 Key scan stop mode is selected. Key scan MODE5 MODE5 17/26 ...
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... ML9227 output the A/D data when function mode 7 is selected. • To select this mode, the only mode data (M0 to M2) is needed. • When ML9227 recieves this mode, the DATA I/O pin is changed to an output pin. • 48-bit A/D data come out from the DATA I/O pin synchronizeing with the rise edge of the clock. ...
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... At this time, the output INT also goes to high level, so this signal can be used as an interrupt. The INT stays High level until the keyscan stop mode is selected chattering absorption time UP (internal) INT Figure 2 The Input and Output Timing in Case of Clockwise B Interrupt Generation Direction Latch R1 FEDL9227-01 ML9227 for INT Output data 19/26 ...
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... When the Direction latch is input DOWN the output R goes “1”. But if the UP pulse is input and the counts value change to plus value, the output R goes to “0” Q1, Q2, Q3 100 110 001 101 Figure 4 010 100 Figure 5 FEDL9227-01 ML9227 011 111 111 000 100 010 20/26 ...
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... OKI Semiconductor 4) P-in/S-out shift resistor When the keyscan stop mode is selected and CS goes L, INT signal goes “L”. CS Data I/O CLOCK INT INT signal goes “L” ROW1 ROW2 Figure 6 FEDL9227-01 ML9227 ROW5 Rotary 21/26 ...
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... OKI Semiconductor Application Circuits 1. Circuit for the duplex VFD tube with 118 segments (2 Grid × 59 Anode) Micro controller FEDL9227-01 ML9227 22/26 ...
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... OKI Semiconductor 2. Circuit for the triplex VFD tube with 177 segments (3 Grid × 59 Anode) Micro controller FEDL9227-01 ML9227 23/26 ...
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... FEDL9227-01 (Unit: mm) Package material Epoxy resin Lead frame material 42 alloy Pin treatment Solder plating (≥5µm) Package weight (g) 1.25 TYP. Rev. No./Last Revised 4/Nov. 28, 1996 ML9227 24/26 ...
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... OKI Semiconductor REVISION HISTORY Document Date No. FEDL9227-01 Dec., 18, 2002 Page Previous Current Edition Edition – – Final edition 1 FEDL9227-01 ML9227 Description 25/26 ...
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... The purchaser assumes the responsibility of determining the legality of export of these products and will take appropriate and necessary steps at their own expense for these part of the contents contained herein may be reprinted or reproduced without our prior permission. FEDL9227-01 Copyright 2002 Oki Electric Industry Co., Ltd. ML9227 26/26 ...