Memory; Sh7619 U Memory And Cache Memory; Flash Memory S29Gl032A90Tfir4 (Standard Component) - Renesas CPU Board M3A-HS19 User Manual

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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.
Part Number
S29GL032A90TFIR4
SH7619 (U1)
Rev.1.01 Oct 28, .2008
REJ10J1351-0101
Table 2.3.1 Flash Memory Specifications
Bus Size
16-bit mode
3.3 V
A21-A1
D15-D0
RD#
3.3 V
3.3 V
WE0#
CS0#
Reset Signal
DIP Switch
( SW4-4)
Figure 2.3.1 Flash Memory Block Diagram
Capacity
4 MB (16 bits x 2 Mwords x 1)
21
A20-A0
16
DQ15-DQ0
BYTE#
3.3 V
OE#
WE#
CE#
RESET#
NC RY/BY#
3.3 V
WP#
Features and Specifications
2.3 Memory
Access Time
90 ns
S29GL032A90TFIR4 (U2)
(2 Mwords x 16 bits)
2-4