Mostek identification

1xxx/2xxx/3xxx/4xxx RAM/ROM chips identification

	¹	²	³		⁴	⁵
MK	I	3881	P	-	7	0

							5. Access time/Frequency

							4. Temperature range
							No designation	Commercial range 0 - +70°C
							1	Extended range -40 - +85°C
							2	Extended range -55 - +125°C
							7	Industrial range -40 - +85°C
							8	Military range (device dependent, usually -55 - +125°C)

							3. Package type
							D	Dual density RAM-PAC
							E	Leadless chip carrier
							F	Flat package
							J	Ceramic DIP
							K	Tin side-brazed ceramic DIP
							N	Plastic DIP
							P	Ceramic side-brazed DIP
							T	Ceramic DIP with transparent lid

							2. Part number
							1xxx or 1xxxx	Shift register, ROM
							2xxx or 2xxxx	ROM, EPROM
							3xxx or 3xxxx	ROM, EPROM
							38xx	Microprocessor components
							4xxx or 4xxxx	RAM
							5xxx or 5xxxx	Counters, Telecommunication and Industrial
							7xxx or 7xxxx	Microcomputer systems

							1. Screening
							No designation	Standard screening.
							I	High Reliability screening. These devices usually have industrial temperature range
							B	MIL-STD-883 Level B screening. These devices usually have military temperature range

3870 identification

Related links: 3870

	¹		²	³	⁴		⁵	⁶
MK	3870	/	2	2	P	-	1	0

									6. Power supply tolerance
									0	5 V ± 10%
									5	5 V ± 5%

									5. Temperature range
									0	Commercial range 0 - +70°C
									1	Extended range -40 - +85°C

									4. Package type
									N	Plastic DIP
									P	Ceramic DIP
									R	Ceramic piggyback DIP

									3. Executable RAM size
									0	None
									2	64 bytes

									2. ROM size
									0	No internal ROM
									1	1 KB
									2	2 KB
									3	3 KB
									4	4 KB

									1. Part number
									2870	28-pin version of MK3870
									3870	Microcontroller with on-board RAM and ROM
									38P70	EPROM version of MK3870 in piggyback package
									3873	MK3870 microcontroller with serial input/output port
									38P73	EPROM version of MK38P73 in piggyback package
									3875	MK3870 microcontroller with low power standby mode
									38P75	EPROM version of MK38P75 in piggyback package

3880 identification

Related links: Z80

	¹	²	³		⁴	⁵
MK	B	3880	P	-	8	0

							5. Access time/Frequency
							No designation	2.5 MHz
							0	2.5 MHz
							4	4 MHz
							6	6 MHz

							4. Temperature range
							No designation	Commercial range 0 - +70°C
							1	Extended range -40 - +85°C
							2	Extended range -55 - +125°C
							3	Extended range -55 - +100°C
							7	Industrial range -40 - +85°C
							8	Military range -55 - +125°C

							3. Package type
							J	Ceramic DIP
							N	Plastic DIP
							P	Ceramic side-brazed DIP

							2. Part number
							3880	3880 (Z80) processor

							1. Screening
							No designation	Standard screening.
							I	High Reliability screening. These chips usually have industrial temperature range
							B	MIL-STD-883 Level B screening. These chips usually have military temperature range

68000 identification