Renesas M3A-HS19 用户手册

Features and Specifications 

2.3 Memory 

Rev.1.01  Oct 28, .2008 

2-4

REJ10J1351-0101 

 

 

 

2 

2.3 Memory 

 

The M3A-HS19 includes the SH7619 on-chip U memory, an external flash memory, external SDRAM and EEPROM. 

Details are described below (Except the PC card). 

 

2.3.1  SH7619 U Memory and Cache Memory 

 

The SH7619 has a 16-KB (RAM) U memory module (address: H’E55FC000~H’E55FFFFF)  and a 16-KB 

instruction/data-unified cache memory. 

 

2.3.2  Flash Memory S29GL032A90TFIR4 (Standard component) 

 

The M3A-HS19 comes standard with a flash memory listed in Table 2.3.1 to store a user program. 

The flash memory is an external bus 16-bit mode fixed and operates at 3.3 V single. The write-protection of flash memory 

can be enabled or disabled by DIP switches (SW4-4).   

Figure 2.3.1 shows the Flash Memory Block Diagram. Table 2.3.2 lists setting examples of the bus state 

controller(write/read) when the SH7619 bus clock operates at 62.5 MHz (clock mode 1), and Figure 2.3.2 shows read and 

write access timing example. 

 

Table 2.3.1 Flash Memory Specifications 

Part Number 

Bus Size 

Capacity 

Access Time

 

S29GL032A90TFIR4 

16-bit mode 

4 MB (16 bits x 2 Mwords x 1) 

90 ns 

 
 

SH7619 (U1)

A21-A1

D15-D0

RD#

WE0#

CS0#

S29GL032A90TFIR4 (U2)

(2 Mwords x 16 bits) 

A20-A0

DQ15-DQ0

21

16

BYTE#

OE#

WE#

CE#

RESET#

RY/BY#

WP#

3.3 V

Reset Signal

NC

DIP Switch

( SW4-4)

3.3 V

3.3 V

3.3  V

3.3 V

 

Figure 2.3.1 Flash Memory Block Diagram