HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 614

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

Section 19 ROM (256 kB Version)
19.4
The registers used to control the on-chip flash memory when enabled are shown in table 19.2.
Table 19.2 Flash Memory Registers
Register Name
Flash memory control
register 1
Flash memory control
register 2
Erase block register 2
RAM emulation register
Notes: FLMCR1, FLMCR2, EBR1, and EBR2 are 8-bit registers, and RAMER is a 16-bit register.
Rev. 5.00 Jan 06, 2006 page 594 of 818
REJ09B0273-0500
Erase block register 1
Only byte accesses are valid for FLMCR1, FLMCR2, EBR1, and EBR2, the access
requiring 3 cycles. Three cycles are required for a byte or word access to RAMER, and 6
cycles for a longword access.
When a longword write is performed on RAMER, 0 must always be written to the lower
word (address H'FFFF8630). Operation is not guaranteed if any other value is written.
1. In modes in which the on-chip flash memory is disabled, a read will return H'00, and
2. When a high level is input to the FWE pin, the initial value is H'80.
3. When a low level is input to the FWE pin, or if a high level is input and the SWE bit in
Register Configuration
writes are invalid. Writes are also disabled when the FWE bit is set to 1 in FLMCR1.
FLMCR1 is not set, these registers are initialized to H'00.
Abbreviation
FLMCR1
FLMCR2
EBR1
EBR2
RAMER
R/W *
R/W *
R/W
R/W
R/W *
R/W *
1
1
1
1
Initial Value
H'00 *
H'00 *
H'00 *
H'00 *
H'0000
2
3
3
3
Address
H'FFFF8580
H'FFFF8581
H'FFFF8582
H'FFFF8583
H'FFFF8628
Access Size
8
8
8
8
8, 16, 32