AD12-16A (98) (CONTEC) 12-bit A / D conversion with 16 single-ended input channels or 8 differential input channels module. Input specification: Non-isolated input bipolar 10V to + 10V or -5V to + 5V 　　　　　Non-Isolated Input Unipolar 0 to +10 V Number of inputs: Single-ended input 16 CH 　　　　　Differential input 8CH Resolution: 12 bits Conversion accuracy: linearity error within ± 2 LSB (at ambient temperature 25 ° C: ambient temperature 0 ° C, An error of about 0.1% occurs at 50 ° C) Conversion method: Sequential comparison (equivalent to HI-674AK) Conversion rate: 12 μsec (Typ.) Slew rate: 17 μsec (Typ.) Input impedance: 2 MΩ Timer: Set within 20 μsec to 40 min (58 steps) Occupied port: 8 bits 2 ports Power consumption: DC5V, 850mA Operating conditions: 0 to 50 ° C, 20 to 90% non-condensing Direct connection with a cable if the signal source is close to the interface, if the distance is long Use shielded wire. ・ Single-ended input / differential input (5 jumpers JP5, 3 jumpers JP6) Single-ended input 　JP5: Short between 2-3 and 4-5 　JP6: 1-2 short circuit Differential input 　JP5: 1-2 and 3-4 short 　JP6: 2-3 short circuit ・ Bipolar / Unipolar (3 jumpers JP2, JP4) bipolar 　Short between JP2 and JP4 1-2 Unipolar 　Short between 2-3 for both JP2 and JP4 ・ Input range (three jumpers JP3) Bipolar (-10 to +10 V) 　1-2 short Bipolar (-5V to + 5V) 　2-3 short circuit Unipolar (0 to +10 V) 　2-3 short circuit ・ External trigger use / not use (3-pin jumper JP9) use 　2-3 short circuit Not used 　1-2 short ・ Interrupt (2x4 column jumper JP1) 1 short: INT 0 2 short: INT 4 3 short: INT 5 4 short: INT 6 An interrupt occurs at the rising edge of the A / D conversion end signal from OFF to ON. ・ I / O port address (8 stations dip switches SW1, SW2) Each dip corresponds to the bit of the port in the order of SW2 and SW1 (ON = 1, OFF = 0). Example) F0D0h SW2 SW1: ON-ON-ON-ON-OFF-OFF-OFF-OFF-ON-ON-OFF-ON-OFF-OFF-OFF-OFF-OFF-OFF ※ 27 pieces of 8-bit address D0h to DFh, EDh to F7h can be used in BASIC (In this case, SW2 is All off). 　Machine language programs can use all 16-bit addresses, but the lower 8 bits Must be D0h to DFh and EDh to F7h. ※ The following two points are different in substrate numbers 9516A and 9516B. 1. JP6 Settings: In these lots JP6 is a 3x2 jumper switch. Single-ended 　Short between 2-3 and 5-6 Differential input 　1-2 short, 4-5 short 2. There is no external trigger terminal and JP9, so external trigger mode can not be used. ・ I / O port address and data ■ OUT port Address set + 0: D7 = Timer gate (D0-D1-D2-D3 channels Perform A / D conversion at time intervals set by timer) 　　　　　　　　　　 D6 = 0 　　　　　 D4 = conversion start (stop outputs 0) 　　　　　　　　　 D0-D1-D2-D3 = Channel selection (a) Channel selection and LED (hereinafter, D3-D2-D1-D0 channel no.■ LT3-LT2-LT1-LT0 (LED) in order) 0-0-0-0 0 0 OFF-OFF-OFF-OFF 0-0-0-1 1 OFF-OFF-OFF-ON 0-0-1-0 2 OFF-OFF-ON-OFF 0-0-1-1 ■ 3 ■ OFF-OFF-ON-ON 0-1-0-0 ■ 4 ■ OFF-ON-OFF-OFF 0-1-0-1 ■ 5 ■ OFF-ON-OFF-ON 0-1-1-0 ■ 6 ■ OFF-ON-ON-OFF 0-1-1-1 ■ 7 ■ OFF-ON-ON-ON 1-0-0-O 8 ON-OFF-OFF-OFF 1-0-0-1 9 ON-OFF-OFF-ON 1-0-1-0 ■ 10 ■ ON-OFF-ON-OFF 1-0-1-1 11 ON-OFF-ON-ON 1-1-0-0 ■ 12 ■ ON-ON-OFF-OFF 1-1-0-1 ■ 13 ■ ON-ON-OFF-ON 1-1-1-0 n 14 ON-ON-ON-OFF 1-1-1-1 ■ 15 ■ ON-ON-ON-ON (b) Timer set: Set the timer value to the programmable timer circuit (50 kHz source oscillation) D0 | 0 0 0 0 1 1 1 1 D1 | 0 0 1 1 0 0 1 1 D2 | 0 1 0 1 0 1 0 1 ------------------------------------------------------ ----------------------------------------- D5 D4 D3 | 1/1 1/10 ^ 1 1/2 1/3 1/4 1/5 1/6 1/12 0 0 0 | 1/1 1/1 1/10 ^ 1 1/2 1/3 1/4 1/5 1/6 1/12 1 0 0 | 1/10 ^ 1 1/10 ^ 1 1/10 ^ 2 1/20 1/30 1/40 1/50 1/60 1/120 1/10 ^ 2 1/10 ^ 2 1/10 ^ 3 1 / 2x10 ^ 2 1 / 3x10 ^ 2 1 / 4x10 ^ 2 1 / 5x10 ^ 2 1 / 6x1 ^ 2 1 / 12x10 ^ 2 1 1 0 | 1/10 | 3 1/10 ^ 3 1/10 ^ 4 1 / 2x10 ^ 3 1 / 3x10 ^ 3 1 / 4x10 ^ 3 1 / 5x10 ^ 3 1 / 6x1 ^ 3 1 / 12x10 ^ 3 0 0 1 | 1/10 ^ 4 1/10 ^ 4 1/10 ^ 5 1 / 2x10 ^ 4 1 / 3x10 ^ 4 1 / 4x10 ^ 4 1 / 5x10 ^ 4 1 / 6x1 ^ 4 1 / 12x10 ^ 4 1 0 1 | 1/10 ^ 5 1/10 ^ 5 1/10 ^ 6 1 / 2x10 ^ 5 1 / 3x10 ^ 5 1 / 4x10 ^ 5 1 / 5x10 ^ 5 1 / 6x1 ^ 5 1 / 12x10 ^ 5 1/10 ^ 6 1/10 ^ 6 1/10 ^ 7 1 / 2x10 ^ 6 1 / 3x10 ^ 6 1 / 4x10 ^ 6 1 / 5x10 ^ 6 1 / 6x1 ^ 6 1 / 12x10 ^ 6 1 1 1 | 1/10 ^ 7 1/10 ^ 7 1/10 ^ 8 1 / 2x10 ^ 7 1 / 3x10 ^ 7 1 / 4x10 ^ 7 1 / 5x10 ^ 7 1 / 6x1 ^ 7 1 / 12x10 ^ 7 (Example) When set to 10 Hz (100 msec interval), 50 kHz 50 10 Hz = 1/5000 (1/5 x 1/10 ^ 3). In this case, D5-D4-D3-D2-D1-D0 is 1-1-0-1-0-1. Set address +1: D0-D1-D2-D3-D4-D5: timer data ■ IN port Set address + 0: D0-D1-D2-D3-D4-D5-D6-D7: A / D conversion data lower 8 bits 　It corresponds to 2 ^ 0, 2 ^ 1, 2 ^ 2, 2 ^ 3, 2 ^ 4, 2 ^ 5, 2 ^ 6, 2 ^ 7 in order. Set address +1 　D0-D1-D2-D3: Upper 4 bits of A / D converted data, corresponding to 2 ^ 8, 2 ^ 9, 2 ^ 10, 2 ^ 11 in order. 　D5: Periodic operation timer status 　　　When 1 is in operation by the timer. 　D6: Conversion end status 　　　A value of 1 indicates that there are unread data after conversion.+ 0 port data The bit is reset by reading. Always 0 when reading 16 bits at a time Therefore, check the conversion in progress / end by the D7 (conversion in progress status) bit. 　D7: Status during conversion 　　　Converting when 1.Make sure that it is 0 when reading data. ・ Input data and voltage (a) Bipolar -10 to +10 V (1 LSB: 4.88 mV) The following is the order of the voltage D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Hexadecimal + 9.99 512V 0 1 1 1 1 1 1 1 1 1 1 1 7FFh 　　　　　■ 0 1 1 1 1 1 1 1 1 1 0 ■ 7 FEh 　　　　　　・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 0V 0 0 0 0 0 0 0 0 0 0 0 0 000h 　　・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ■ 1 0 0 0 0 0 0 0 0 0 0 0 1 ■ 801 h -10V 1 0 0 0 0 0 0 0 0 0 0 0 0 800h (b) Bipolar -5V to + 5V (1 LSB: 2.44mV) + 4.99756V 0 1 1 1 1 1 1 1 1 1 1 1 7FFh 　　　　　■ 0 1 1 1 1 1 1 1 1 1 0 ■ 7 FEh 　　　　　　・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 0V 0 0 0 0 0 0 0 0 0 0 0 0 000h 　　・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ■ 1 0 0 0 0 0 0 0 0 0 0 0 1 ■ 801 h -5V 1 0 0 0 0 0 0 0 0 0 0 0 0 800h (c) Unipolar 0 to +10 V (1 LSB: 2.44 mV) + 9.99756V ■ 1 1 1 1 1 1 1 1 1 1 1 1 ■ FFFh 　　　　　■ 1 1 1 1 1 1 1 1 1 1 1 0 ■ FFEh 　　　　　　・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ 5V 1 0 0 0 0 0 0 0 0 0 0 0 0 800h 　　・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ■ 0 0 0 0 0 0 0 0 0 0 0 0 1 ■ 001 h 0V 0 0 0 0 0 0 0 0 0 0 0 0 000h ※ Although the input protection by the diode is done, the excessive input more than ± 10 V causes the module damage Note that it will be. ・ Interface connector Connector type: Amphenol full 36 pin female (Daiichi Electronics Industries 57LE-40360-77C0) Terminal No.■ Single-ended input name ■ Differential input name 1 ■ External trigger ■ External trigger 2 ■ IN 7 ■ IN 7 A 3 ■ IN 15 ■ IN 7 B 4 ■ IN 6 ■ IN 6 A 5 ■ IN 14 ■ IN 6 B 6 ■ IN 5 ■ IN 5 A 7 ■ IN 13 ■ IN 5 B 8 ■ IN 4 ■ IN 4 A 9 ■ IN 12 ■ IN 4 B 10 ■ COMMON ■ COMMON 11 ■ IN 3 ■ IN 3 A 12 IN 11 IN 3 B 13 ■ IN 2 ■ IN 2 A 14 ■ IN 10 ■ IN 2 B 15 IN 1 IN 1A 16 IN 9 IN 1 B 17 ■ IN 0 ■ IN 0 A 18 IN 8 IN 0 B Terminal Nos. 19-36 are COMMON. ・ Hardware interrupt (1) In the PC-9801 series, two interrupt controllers μPD8259 are cascade-connected 　 doing.To use an interrupt, mask reset the μPD8259 and The table address must be registered. a) Correspondence between interrupt levels and mask bits in the μPD8259: 　INT 0: Master 8259 (02H port) D3 bit 　INT 5: slave 8259 (0AH port) D4 bit 　INT 6: slave 8259 (0AH port) D5 bit 　By resetting the port bit shown above, interrupts are enabled, 　Interrupts are disabled by setting a bit. 　Example) Allow INT 0, INT 5 　　IN AL, 02 H; Acquisition of current mask state 　　AND AL, 0F7H; Clear bit corresponding to INT 0 OUT 02H, AL; set new mask state 　　IN AL, 0AH; Acquisition of current mask state 　　AND AL, 0EFH; Clear the bit corresponding to INT 5 OUT 0AH, AL; Set a new mask state b) Interrupt level and interrupt processing destination registration address 　INT 0: From segment 0H / offset 2CH 　INT 5: From segment 0H / offset 50H 　INT 6: From segment 0H / offset 54H 　Offset the start address of the interrupt processing program from the address shown above, 　Register in the order of segments. 　Example: The interrupt processing destination address of INT 0 is segment 1E00H, offset 100H, 　　　Also, the interrupt processing destination address of INT 5 is segment 1E00H, offset 　　　In the case of 200H 　　　MOV AX, 0; Segment 0 set MOV DS, AX; INT 0 MOV WORD PTR [2CH], 100H; Offset registration MOV WORD PTR [2EH], 1E00H; Segment registration ; INT 5 MOV WORD PTR [50H], 200H; Offset registration MOV WORD PTR [52H], 1E00H; Segment registration (2) Interrupt processing program 　 a) Saving of registers used for interrupt processing b) Interrupt processing c) Reset of interrupt controller μPD8259 　MOV AL, 20H; EOI command set OUT 0, AL: Reset of master μPD 8259 OUT 8, AL; reset of slave μPD 8259 　However, in the case of INT 0, it is not necessary to reset the slave μPD8259. d) Register return + IRET ・ How to adjust This interface is factory adjusted at the factory with bipolar -10 V to +10 V input specifications. If you do not get the desired result or change the input specification, adjust it in the following way: a) Set to the input specification (single-ended input or differential input) to be used. b) Run the program and start data entry. c) Apply a voltage of +1/2 LSB so that the display will be "001" (both unipolar and bipolar), Adjust VR1 in unipolar specification and VR3 in bipolar specification together with VR5 and VR6. d) + + full scale-3/2 LSB voltage is applied, and in unipolar specification, the display is "FFF", and In the bipolar specification, the gain is adjusted by VR2 so that the display becomes "7FF". e) Return to c) and repeat until everything matches, even without adjusting VR.