NAND08GAH0A NUMONYX [Numonyx B.V], NAND08GAH0A Datasheet - Page 68

• Manufacturer Part Number: NAND08GAH0A
• Manufacturer: NUMONYX [Numonyx B.V]

Device registers
8.4.2
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MIN_PERF_a_b_ff
These fields defines the overall minimum performance value for the read and write access
with different bus width and maximum clock frequency modes. The value in the register is
coded as follows. Other than defined values are illegal.
Table 51.
Value
0x3C
0x8C
0x0A
0x0F
0x1E
0xA0
0x00
0x08
0x14
0x28
0x32
0x46
0x50
0x64
0x78
For devices not reaching the 2.4 Mbyte/s minimum value
Class A: 2.4 Mbyte/s and is the lowest allowed value for MMCplus and
MMCmobile(16 x 150 Kbyte/s)
Class B: 3.0 Mbyte/s and is the next allowed value (20 x 150 Kbyte/s)
Class C: 4.5 Mbyte/s and is the next allowed value (30 x 150 Kbyte/s)
Class D: 6.0 Mbyte/s and is the next allowed value (40 x 150 Kbyte/s)
Class E: 9.0 Mbyte/s and is the next allowed value (60 x 150 Kbyte/s)
This is also the highest class which any MMCplus or MMC mobile card is needed to
support in low bus category operation mode (26 MHz with 4 bit data bus).
An MMCplus or MMCmobile card supporting any higher class than this has to support
this class also (in low category bus operation mode).
Class F: Equals 12.0 Mbyte/s and is the next allowed value (80 x 150 Kbyte/s)
Class G: Equals 15.0 Mbyte/s and is the next allowed value (100 x 150 Kbyte/s)
Class H: Equals 18.0 Mbyte/s and is the next allowed value (120 x 150 Kbyte/s)
Class J: Equals 21.0 Mbyte/s and is the next allowed value (140 x 150 Kbyte/s)
This is also the highest class which any MMCplus or MMCmobile card is needed to
support in mid bus category operation mode (26 MHz with 8 bit data bus or 52 MHz with
4 bit data bus).
An MMCplus or MMCmobile card supporting any higher class than this has to support
this class (in mid category bus operation mode) and class E also (in low category bus
operation mode)
Class K: Equals 24.0 Mbyte/s and is the next allowed value (160 x 150 Kbyte/s)
Class M: Equals 30.0 Mbyte/s and is the next allowed value (200 x 150 Kbyte/s)
Class O: Equals 36.0 Mbyte/s and is the next allowed value (240 x 150 Kbyte/s)
Class R: Equals 42.0 Mbyte/s and is the next allowed value (280 x 150 Kbyte/s)
Class T: Equals 48.0 MByte/s and is the last defined value (320 x 150 Kbyte/s)
R/W access performance values
Performance
NAND08GAH0A, NAND16GAH0D