W86L387D Winbond Electronics, W86L387D Datasheet - Page 14

• Manufacturer Part Number: W86L387D
• Manufacturer: Winbond Electronics

Specifications of W86L387D

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Package Type: LQFP
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

Data Size Register A[3:1] = 111, Read/Write:
This data size register is used to set the Host data size, default is 16-bit data size, write 1 to bit 0 will
set the data size to 8-bit, bit [7:1] must write 0.
7. FUNCTIONAL DESCRIPTION
7.1
The Host interface type may be type 1 or type 2 and the data size of the data bus may be 16-bit or 8-
bit.
Host Interface Type 1:
The Host interface type 1 is selected when XTYP pin is low. The data size of the CPU data bus may
be 16-bit or 8-bit. Figure 7-1 shows the timing of 16-bit CPU read and write in type 1, figure 7-2 and 7-
3 show the timing of CPU 8-bit data bus read and write in type 1.
BIT 15 BIT 14 BIT 13 BIT 12 BIT 11 BIT 10 BIT 9 BIT 8 BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
-
Host Interface
-
A[3:1]
D[15:0]
XCSN
XRDN
XWRHN
XWRLN
-
-
Fig. 7-1 16-bit Read and Write Access in Host I/F Type 1.
-
-
DO[15:0]
-
- 12 -
-
0
-
0
-
0
-
DI[15:0]
0
-
0
-
W86L387D
0
-
0
-
8-bit
0