Rev. 1.00, 09/03, page 533 of 704
20.2 Input/Output
Pins
Table 20.2 shows the flash memory pin configuration.
Table 20.2 Pin Configuration
Pin Name
I/O
Function
RES
Input Reset
FWE
Input
Flash memory programming/erasing enable pin
MD2
Input
Sets operating mode of this LSI
MD1
Input
Sets operating mode of this LSI
MD0
Input
Sets operating mode of this LSI
TxD1
Output
Serial transmit data output (used in boot mode)
RxD1
Input
Serial receive data input (used in boot mode)
20.3 Register
Descriptions
The registers/parameters which control flash memory are shown below. To access these registers,
the FLSHE bit in SYSCR must be set to 1. For details on SYSCR, see section 3.2.2, System
Control Register (SYSCR).
•
Flash code control/status register (FCCS)
•
Flash program code select register (FPCS)
•
Flash erase code select register (FECS)
•
Flash key code register (FKEY)
•
Flash MAT select register (FMATS)
•
Flash transfer destination address register (FTDAR)
•
Download pass/fail result (DPFR)
•
Flash pass/fail result (FPFR)
•
Flash multipurpose address area (FMPAR)
•
Flash multipurpose data destination area (FMPDR)
•
Flash erase block select (FEBS)
•
Flash program/erase frequency control (FPEFEQ)
There are several operating modes for accessing flash memory, for example, read mode/program
mode.
There are two memory MATs: user MAT and user boot MAT. The dedicated registers/parameters
are allocated for each operating mode and MAT selection. The correspondence of operating modes
and registers/parameters for use is shown in table 20.3.
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