Sram Connections; Figure 5-1: Example Of Connection To Sram - NEC V850E/CA1 ATOMIC Preliminary User's Manual

5.1.2 SRAM connections

An example of connection to SRAM is shown below.
V850E/CA1
Remark: CSn = CS2 to CS4
146
Chapter 5 Memory Access Control Function

Figure 5-1: Example of Connection to SRAM

(a) When data bus width is 16 bits
A1 to A17
D0 to D15
CSn
RD
LWR
UWR
(b) When data bus width is 8 bits
A1 to A17
D0 to D7
CSn
RD
LWR
D8 to D15
UWR
V850E/CA1
Preliminary User's Manual U14913EE1V0UM00
A1 to A17
D1 to D16
CS
OE
WE
LBE
UBE
2-Mbit SRAM
(256 Kwords x 16 bits)
A0 to A16
D1 to D8
CS
OE
WE
1-Mbit SRAM
(128 Kwords x 8 bits)
A0 to A16
D1 to D8
CS
OE
WE
1-Mbit SRAM
(128 Kwords x 8 bits)