IC function:	64 kbit (64k×1) DRAM
Related components:	8 kbit (8k×1) DRAM, 16 kbit (16k×1) DRAM, 256 kbit (256k×1) DRAM, 1 Mbit (1M×1) DRAM

Component documentation

IC number	Manufacturer	Documentation
HM4864	Hitachi	Not available
HM4864A	Hitachi	Not available
µPD4164	NEC	Not available
M5K416	Mitsubishi	Not available
MK4564	Mostek	Not available
MSM3764	Oki	Not available
MN4164	Matsushita (Panasonic)	Not available
HYB4164	Siemens	Not available
LH2164	Sharp	Not available
TMM4164	Toshiba	Not available
TMM4164A	Toshiba	Not available
TMS4164	Texas Instruments	Not available
MB8264	Fujitsu	Not available
MB8264A	Fujitsu	Not available
MT4264	Micron	Not available

Component versions

IC number	Package	Access time
HM4864-3, HM4864P-3, HM4864AP-3, µPD4164-2, M5K416NS-20, MK4564N-20, MSM3764-20, M3764-20RS, MN4164P-20, HYB4164-3, LH2164-Z1, TMM4164AP-20, TMS4164-20NL	16-pin DIP	200 ns
MB8264-15-P-G, MB8264A-15, HM4864-2, MT4264-2, µPD4164C-15, MSM3764-15RS, LH2164-15, TMM4164P-3, MK4564N-15	16-pin DIP	150 ns

Component part numbers

CBM part number	CBM part description
901505-01	4164-2 DRAM
901505-02	IC MEM DRAM 64KX1BIT 150NS

Positions

Device	Positions	Positions (not installed)	Package	Access time
PC10 256k RAM expansion		U10, U11	DIP	150 ns
PC10 384k RAM expansion	U10, U11		DIP	150 ns
C64	U9..U12, U21..U24		DIP	200 ns
SX 64 CPU board	UA4..UA7, UB4..UB7		DIP	200 ns
Plus 4	U11..U18		DIP	200 ns
C128 rev. 6 board	U38..U53		DIP	200 ns
C128 rev. 7 board	U38..U53		DIP	150 ns
Super PET 9000 combo board	U22..U29		DIP	200 ns
CBM II lo-profile 128k	U64..U79	U29..U36, U45..U52	DIP	150 ns
CBM II lo-profile 256k	U29..U36, U45..U52, U64..U79		DIP	150 ns
CBM II hi-profile 128k	U37, U38, U45, U47, U50, U51, U59, U60, U67, U68, U76, U77, U85, U86, U89, U90	U39, U40, U47, U48, U52, U53, U61, U62, U69, U70, U78, U79, U87, U88, U91, U92	DIP	150 ns
CBM II hi-profile 256k	U37..U40, U45..U48, U50..U53, U59..U62, U67..U70, U76..U79, U85..U92		DIP	150 ns

Pinout

Pin	Type	Name
1	N/C	NC
2	Input	DIN
3	Input	_WE
4	Input	_RAS
5..7	Input	Address
8	Power	VCC
9..13	Input	Address
14	Output	DOUT
15	Input	_CAS
16	Power	GND