Memory Megafunctions

Memory Compiler includes FIFO, RAM, ROM, and memory functions.

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IP Catalog	Megafunction(s)	Comments
ALTOTP	altotp	One-time-programmable (OTP) fuse block megafunction.
RAM initializer	altmem_init	RAM initialization from ROM megafunction.
FIFO	`dcfifo`	Parameterized dual-clock FIFO megafunction.
	dcfifo_mixed_widths	Parameterized dual-clock mixed-widths FIFO megafunction.
	`scfifo`	Parameterized single-clock FIFO megafunction.
Flash Memory	`altufm_i2c`	User flash memory megafunction with the inter-integrated circuit (I2C) interface protocol.
	`altufm_none`	User flash memory megafunction (no interface protocol).
	`altufm_parallel`	User flash memory megafunction with the parallel interface protocol.
	`altufm_spi`	User flash memory megafunction with the serial peripheral interface (SPI) protocol.
RAM: 1-PORT	`altdpram`	Parameterized dual-port RAM megafunction.
	altram*	Parameterized RAM megafunction.
	`altsyncram`	Parameterized true dual-port RAM megafunction.
RAM: 2-PORT	`altdpram`	Parameterized dual-port RAM megafunction.
	`altsyncram`	Parameterized true dual-port RAM megafunction.
	`lpm_ram_dq*`	Parameterized RAM with separate input and output ports megafunction.
RAM: 3-PORT	`alt3pram`	Parameterized triple-port RAM megafunction.
ROM: 1-PORT	altrom*	Parameterized ROM megafunction.
	`altsyncram`	Parameterized true dual-port synchronous RAM megafunction.
	`lpm_rom*`	Parameterized ROM megafunction.
ROM: 2-PORT	`altsyncram`	Parameterized true dual-port synchronous RAM megafunction.
Shift register (RAM-based)	`altshift_taps`	Parameterized shift register with taps megafunction.