Signetics identification

2650 (old naming convention) | 2650 (new naming convention) | 3002 | 68000 | 8031 and 8051 | 80c31 and 80c51 microcontrollers

1	2
2650A	N
		2. Package type
		I	Side-brazed ceramic DIP
		N	Plastic DIP
		1. Part number
		2650	2650 processor
		2650A	2650 processor

	1	2	3	4	5
SCN	2650A	C	1	N	40
						5. Pin count
						40	40 pin package
						4. Package type
						I	Ceramic DIP
						N	Plastic DIP
						3. Frequency
						2. Temperature range
						A	Industrial range
						C	Commercial range
						1. Part number
						2650A	2650 microprocessor

	1	2
N	3002	N
			2. Package type
			I	Side-brazed ceramic DIP
			N	Plastic DIP
			1. Part number
			3001	Microprogram control unit
			3002	Central processing element

	1	2	3	4	5	6
SC	N	68000	C	A	N	64
							6. Pin count
							64	64 pin package
							68	68 pin package
							5. Package type
							A	Plastic LCC
							F	Ceramic DIP
							I	Side-brazed ceramic DIP
							N	Plastic DIP
							P	Ceramic PGA
							4. Frequency
							8	8 MHz
							A	10 MHz
							B	12.5 MHz
							3. Temperature range
							A	Automotive range -40 - +85°C
							C	Commercial range 0 - +70°C
							M	Military range -55 -+125°C
							P	Philips range -20 - +70°C
							2. Part number
							68000	68000 CPU
							68010	68010 CPU
							1. Manufacturing technology
							B	Bi-polar
							C	CMOS
							N	N-channel

	1	2	3	4	5	6	7
SCN	8031A	H	C	C	N	40	CPxxxx
								7. Custom ROM pattern (8051 and 8052 microcontrollers only)
								6. Pin count
								40	40 pin package
								44	44 pin package
								5. Package type
								A	Plastic LCC
								I	Ceramic DIP
								N	Plastic DIP
								4. Frequency
								C	12 MHz
								3. Temperature range
								A	Industrial range -40 - +85°C
								C	Commercial range 0 - +70°C
								2. Power consumption
								H	Reduced power consumption
								1. Part number
								8031A	8031 microcontroller with 128 bytes RAM and without ROM
								8032A	8032 microcontroller with 256 bytes RAM and without ROM
								8051A	8051 microcontroller with 128 bytes RAM and mask-programmed 4 KB ROM
								8052A	8052 microcontroller with 256 bytes RAM and mask-programmed 8 KB ROM

	1	2	3	4	5	6
SC	80C31	C	C	N	40	CPxxxx
							6. Custom ROM pattern (80C51 microcontroller only)
							5. Pin count
							40	40 pin package
							44	44 pin package
							4. Package type
							A	Plastic LCC
							I	Ceramic DIP
							N	Plastic DIP
							3. Frequency
							0	3.5 - 12 MHz
							1	3.5 - 16 MHz
							2	0.5 - 12 MHz
							2. Temperature range
							A	Industrial range -40 - +85°C
							C	Commercial range 0 - +70°C
							1. Part number
							80C31B	8031 CMOS microcontroller with 128 bytes RAM and without ROM
							80C51B	8051 CMOS microcontroller with 128 bytes RAM and mask-programmed 4 KB ROM