HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 659

• Manufacturer Part Number: HD64F7050
• Description: 32-Bit RISC Microcomputer SuperH RISC engine Family/
• Manufacturer: RENESAS [Renesas Technology Corp]

20.1
The SH7050 has 6 kbytes/the SH7051 has 10 kbytes of on-chip RAM. The on-chip RAM is linked
to the CPU and direct memory access controller (DMAC) with a 32-bit data bus (figure 20.1). The
CPU can access data in the on-chip RAM in 8, 16, or 32 bit widths. The DMAC can access 8 or 16
bit widths. On-chip RAM data can always be accessed in one state, making the RAM ideal for use
as a program area, stack area, or data area, which require high-speed access. The contents of the
on-chip RAM are held in both the sleep and software standby modes. When the RAME bit (see
below) is cleared to 0, the on-chip RAM contents are also held in hardware standby mode.
Memory area 0 addresses H'FFFFF800 to H'FFFFFFFF (SH7050) and H'FFFF0800 to
H'FFFFFFFF (SH7051) are allocated to the on-chip RAM.
Overview
SH7050
SH7051
H'FFFFFFFC
H'FFFFFFFC
H'FFFFF800
H'FFFFF804
H'FFFFD800
H'FFFFD804
Figure 20.1 Block Diagram of RAM
Section 20 RAM
H'FFFFFFFD
H'FFFFFFFD
H'FFFFD801
H'FFFFD805
H'FFFFF801
H'FFFFF805
Internal data bus (32 bits)
Internal data bus (32 bits)
On-chip RAM
On-chip RAM
H'FFFFFFFE
H'FFFFFFFE
H'FFFFD802
H'FFFFD806
H'FFFFF802
H'FFFFF806
Rev. 5.00 Jan 06, 2006 page 639 of 818
H'FFFFFFFF
H'FFFFFFFF
H'FFFFD803
H'FFFFD807
H'FFFFF803
H'FFFFF807
REJ09B0273-0500
Section 20 RAM