CY308 Pinouts

CY308 DIP Pinout
CY308/J PLCC Pinout
CY308/Q QFP Pinout*

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CY308 Dip Pin#	CY308/J PLCC Pin#	CY308/Q QFP* Pin#	Pin Name	I/O	Description
-	1	39	NC		no internal connection
1	2	40	CE0	O	Display Module Chip-Enable bit 0
2	3	41	CE1	O	Display Module Chip-Enable bit 1
3	4	42	CE2	O	Display Module Chip-Enable bit 2
4	5	43	CE3	O	Display Module Chip-Enable bit 3
5	6	44	CE4	O	Display Module Chip-Enable bit 4
6	7	1	CE5	O	Display Module Chip-Enable bit 5
7	8	2	CE6	O	Display Module Chip-Enable bit 6
8	9	3	CE7	O	Display Module Chip-Enable bit 7
9	10	4	Restart	I	Resets CY308 when high
10	11	5	RxD	I	Received Serial Data line
-	12	6	NC		no internal connection
11	13	7	TxD	O	Transmitted Serial Data Line
12	14	8	Clock Gate	I/O	Selects Clock function: Hi=Run, Lo=Stop
13	15	9	IO Request/	I/O	Parallel handshake input; else Serial baud select: Lo=300, Hi=2400, Z=9600
14	16	10	FPL/	O	Forced parallel load output signal
15	17	11	Busy/	I/O	Parallel handshake acknowledgement
16	18	12	WR/	O	Write Strobe to LED module
17	19	13	RD/	O	Read Strobe to LED module
18	20	14	Xtal2	I	Crystal oscillator connection
19	21	15	Xtal1	I	Crystal oscillator connection
20	22	16	Vss	I	Ground connection for CY308
-	23	17	NC		no internal connection
21	24	18	Addr0	O	Display Module address bit 0
22	25	19	Addr1	O	Display Module address bit 1
23	26	20	Addr2	O	Display Module address bit 2
24	27	21	Addr3	O	Display Module address bit 3
25	28	22	Addr4	O	Display Module address bit 4
26	29	23	Addr5	I/O	Display Module address bit 5 Lo=4-char module, else 8-char module
27	30	24	Clock Alarm	O	Clock overflow or Period indication
28	31	25	Disp Reset	O	Display Module reset signal
29	32	26	Reserved	O	do not connect
30	33	27	Clock Out	O	clock output, 1/6 crystal rate
-	34	28	NC		no internal connection
31	35	27	Vdd	I	+5v
32	36	30	D 7	I/O	Parallel Data Bus bit 7 (MSB)
33	37	31	D 6	I/O	Parallel Data Bus bit 6
34	38	32	D 5	I/O	Parallel Data Bus bit 5
35	39	33	D 4	I/O	Parallel Data Bus bit 4
36	40	34	D 3	I/O	Parallel Data Bus bit 3
37	41	35	D 2	I/O	Parallel Data Bus bit 2
38	42	36	D 1	I/O	Parallel Data Bus bit 1
39	43	37	D 0	I/O	Parallel Data Bus bit 0 (LSB)
40	44	38	Vcc (+ 5V)	I	+5 volt power supply

* QFP Notes:
- While the numbering scheme of the QFP pinout differs from the PLCC, the physical location of functional pins will be identical on both packages.
- The QFP package is currently only available in 1000 quantity minimums.