Rainbow-electronics T89C51AC2 Manuel d'utilisateur télécharger pdf (Page 39)

T89C51AC2

Rev. B – 19-Dec-01

9.4 Registers

FCON RegisterFCON (S:D1h)

FLASH Control Register

Reset Value= 0000 0000b

76543210

FPL3 FPL2 FPL1 FPL0 FPS FMOD1 FMOD0 FBUSY

Bit

Number

Bit

Mnemonic Description

7-4 FPL3:0

Programming Launch Command Bits

Write 5Xh followed by AXh to launch the programming according to FMOD1:0.

(see Table 10.)

3FPS

FLASH Map Program Space

Set to map the column latch space in the data memory space.

Clear to re-map the data memory space.

2-1 FMOD1:0

FLASH Mode

See Table 9 or Table 10.

0 FBUSY

FLASH Busy

Set by hardware when programming is in progress.

Clear by hardware when programming is done.

Can not be changed by software.

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Rainbow-electronics T89C51AC2 Manuel d'utilisateur Page 39