W90N745CD Datasheet, PDF (70/422 Pages) Winbond – 16/32-bit ARM microcontroller

W90N745CD/W90N745CDG
Continued.
BITS
[11:8]
tPA
[7:4]
tACC
[3:2]
BTSIZE
DESCRIPTION
Page mode access cycle time
tPA[11:8]
MCLK
tPA[11:8]
MCLK
0000
1
1000
10
0001
2
1001
12
0010
3
1010
14
0011
4
1011
16
0100
5
1100
18
0101
6
1101
20
0110
7
1110
22
0111
8
1111
24
Access cycle time
tACC[11:8]
0000
0001
0010
0011
0100
0101
0110
0111
MCLK
1
2
3
4
5
6
7
8
tACC[11:8]
1000
1001
1010
1011
1100
1101
1110
1111
MCLK
10
12
14
16
18
20
22
24
Boot ROM/FLASH data bus width
This ROM/Flash bank is designed for a boot ROM. BASADDR bits
determine its start address. The external data bus width is determined by
the data bus signals D [13:12] power-on setting.
BTSIZE [3:2]
0
0
0
1
1
0
1
1
Bus Width
8-bit
16-bit
RESERVED
RESERVED
D [13:12]
Pull-down Pull-down
Pull-down Pull-up
Pull-up Pull-down
Pull-up Pull-up
Bus Width
8-bit
16-bit
RESERVED
RESERVED
Page mode configuration
PGMODE [1:0]
[1:0]
PGMODE
0
0
0
1
1
0
1
1
Mode
Normal ROM
4 word page
8 word page
16 word page
Publication Release Date: September 22, 2006
- 65 -
Revision A2