r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1401
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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27.4.4
The FLCTL can read the status register of a NAND-type flash memory. The data in the status
register of a NAND-type flash memory is input through the I/O7 to I/O0 pins and stored in the bits
STAT7 to STAT0 in FLBSYCNT. The bits STAT7 to STAT0 in FLBSYCNT can be read by the
CPU. If a program error or erase error is detected when the status register value is stored in the
bits STAT7 to 0 in FLBSYCNT, the STERB bit in FLINTDMACR is set to 1 and generates an
interrupt to the CPU if the STERINTE bit in FLINTDMACR is enabled.
(1)
The status read of NAND-type flash memory can be performed by inputting the command H'70 to
NAND-type flash memory. When the DOSR bit in FLCMDCR is set to 1 and writing is performed
in command access mode or sector access mode, the FLCTL automatically inputs H'70 to NAND-
type flash memory and status read is performed. During the status read of NAND-type flash
memory, the I/O7 to I/O0 pins indicate the following information as shown in table 27.4.
Table 27.4 Status Read of NAND-Type Flash Memory (512 + 16 Bytes)
I/O
I/O7
I/O6
I/O5 to I/O1
I/O0
Status Read of NAND-Type Flash Memory (512 + 16 Bytes)
Status Read
Ready/busy
Status (Definition)
Write protection
Reserved
Write/erase
Description
0: Cannot be written
1: Can be written
0: Busy state
1: Ready state
⎯
0: Pass
1: Fail
27. NAND Flash Memory Controller (FLCTL)
Rev.1.00 Jan. 10, 2008 Page 1371 of 1658
REJ09B0261-0100
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