Kenwood YK-88CN, PS-50, SP-430 MB4052 Pin Descriptio n Signal Pin Function s, Ad C, Clk, Data, Out

TS-440S

SEMICONDUCTOR

e MB4052

PC 5

Co CI 7~J7

®Comparato r

D

IF-SHIFT -

R IT -	AI		Lam,
	O		, Multi _
		~		Comparato r
r
	Ag o	D I	ple	Resistor
Not us e
L	A3

7800

	PC7
12 ADC CLK	PC 6

le

8255 (IC2 )

+5v

			8 bi t	RS
			DA C
EX . 2
Regulator		v CC I
EX.!
2 .5 K
6	S	O
VccI	Vcc2	A .G	D.G

MB4052 Pin Descriptio n

I/O Signal Pin Function s

Pin No .	Pin Name	Symbol
2	Range expande r	Ex .	2
	input	Ex .	1

3Range expande r output

4—7	Analog entrance	Ao—A 3
9	Channel select input	C o
10		C,
11	Chip select input	CS
12	A/D convertio n	AD C
	clock	CLK
13	Data output	DATA
		OUT

Functio n

Analog input pin for expanding the range .

Analog output pin for expanding the range . Connect to any pin from AO to A3 . By using Ex . 1, Ex . 2, the range is expanded to the x4 range .

4-ch analog input pin . Channel 1 is selected by channel select input CO to Cl .

The input pin to designate the analog input channel for A/D converter . This signal is latche d at the trailing edge of CS .

This is the chip select input pin . When CS is inverted from "1" to "0", A/D convertin g starts and data output is enabled . After A/D converting is over or when an interrupt is re - quired, set the CS back to "1" .

This is the clock input pin for A/D convertion input to the comparator register sequentially . Convertion speed is determined by the clock speed . In the case of 8-bit, approx . 10 clock s will be needed . However, it is not necessary that the clock period be fixed .

This is the open collector to output the result of A/D convertion . The data is output in th e order of the start bit, most significant bit, 2nd significant bit, . . ., least significant bit, an d the stop bit, synchronized with ADCCLK .

14	Range select input	RS	This is the input pin for selecting the voltage range of analog input . The VFS=Vcc,/8 rang e
			is selected at "0", and the range of FVS=Vcc,i2 is selected at "1" . During convertion ,
			hold this pin to "0" or "1" .

1	Analog groun d	A . G
8	Digital ground	D .G
1 5	Power supply pin 2	Vcc 2
16	Power supply pin 1	Vcc 1

Ground termina l

When driving with 3 .5 to 6 .0 V of power, connect Vcc, and Vcc 2 to each other, and appl y the power voltage to them .

When driving 8 to 18 V of power, apply the power voltage to Vcc 2 . At this time, the 5 V stabilized voltage is output to Vcc,, and approx . 10 mA current can be supplied externall y to the IC .

When either 3 .5--6 .0 V or 8— 18V power is used, Vcc, is the reference voltage for A/ D convertion .

• Channel Select		•	Range select		• Wiring example when expanding the rang e
C ,	C o	Selected Ch .	RS	'Convertion vol -
				tage rang e
0	0	A o
				Vcc ,
0	1	A ,	0
				0—' 8
1	0	A 2		Vcc ,
1	1	A 3	1
				0--'
				2
					MB4052

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