3886 datasheet(280/380 Pages) RENESAS

280 / 380 page

3886 Group User’s Manual

APPLICATION

2-163

2.15 Flash memory

Fig. 2.15.3 Structure of Flash memory control register

Fig. 2.15.2 Memory map of registers relevant to flash memory

2.15.3 Relevant registers

0FFE16

Flash memory control register (FCON)

Flash command register (FCMD)

0FFF16

Flash memory control register

b7 b6 b5 b4 b3 b2 b1 b0

Flash memory control register

(FCON : address FFE16)

Name

Functions

At reset R W

Erase/Program

busy flag

Fix this bit to “0”.

Erase/Program

area select bits

CPU reprogramming

mode monitor flag

0 : CPU reprogramming

mode is invalid. (Normal

operation mode)

1 : When applying 0 V to

CNVSS/VPP pin, CPU

reprogramming mode is

invalid. When applying

VPPH to CNVSS/VPP pin,

CPU reprogramming

mode is valid.

0 : Erase and program are

completed or have not

been executed.

1 : Erase/program is being

executed.

0 : CPU reprogramming

mode is invalid

1 : CPU reprogramming

mode is valid

Fix this bit to “0”.

CPU reprogramming

mode select bit

(Note)

Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

Note: Bit 0 can be reprogrammed only when 0 V is applied to the CNVSS/VPP pin.

b5 b4

0 0: Address 100016 to

FFFF16 (total 60Kbytes)

0 1: Address 100016 to

7FFF16 (total 28Kbytes)

1 0: Address 800016 to

FFFF16 (total 32Kbytes)

1 1: not available

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