Cyclone V Device Datasheet

ID 683801
Date 5/23/2023
Public
Document Table of Contents

NAND Timing Characteristics

Table 52.  NAND ONFI 1.0 Timing Requirements for Cyclone® V DevicesThe NAND controller supports Open NAND FLASH Interface (ONFI) 1.0 Mode 5 timing as well as legacy NAND devices. This table lists the requirements for ONFI 1.0 mode 5 timing. The HPS NAND controller can meet this timing by programming the C4 output of the main HPS PLL and timing registers provided in the NAND controller.
Symbol Description Min Max Unit
Twp 72 Write enable pulse width 10 ns
Twh 72 Write enable hold time 7 ns
Trp 72 Read enable pulse width 10 ns
Treh 72 Read enable hold time 7 ns
Tclesu 72 Command latch enable to write enable setup time 10 ns
Tcleh 72 Command latch enable to write enable hold time 5 ns
Tcesu 72 Chip enable to write enable setup time 15 ns
Tceh 72 Chip enable to write enable hold time 5 ns
Talesu 72 Address latch enable to write enable setup time 10 ns
Taleh 72 Address latch enable to write enable hold time 5 ns
Tdsu 72 Data to write enable setup time 10 ns
Tdh 72 Data to write enable hold time 5 ns
Tcea Chip enable to data access time 25 ns
Trea Read enable to data access time 16 ns
Trhz Read enable to data high impedance 100 ns
Trr Ready to read enable low 20 ns
Figure 15. NAND Command Latch Timing Diagram


Figure 16. NAND Address Latch Timing Diagram


Figure 17. NAND Data Write Timing Diagram


Figure 18. NAND Data Read Timing Diagram


72 Timing of the NAND interface is controlled through the NAND configuration registers.