W78ERD2 datasheet(21/72 Pages) WINBOND

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W78ERD2

Publication Release Date: April 20, 2005

- 21 -

Revision A4

BIT

NAME

FUNCTION

7~0

SADEN

This register enables the Automatic Address Recognition feature of the Serial

port 0. When a bit in the SADEN is set to 1, the same bit location in SADDR will

be compared with the incoming serial data. When SADEN.n is 0, then the bit

becomes a "don't care" in the comparison. This register enables the Automatic

Address Recognition feature of the Serial port 0. When all the bits of SADEN

are 0, interrupt will occur for any incoming address.

On-Chip Programming Control

Bit:

SWRST/R

EBOOT

FBOOTSL FPROGEN

Mnemonic: CHPCON

Address: BFh

BIT

NAME

FUNCTION

SWRESET/

REBOOT

(F04KMODE)

When this bit is set to 1, and both FBOOTSL and FPROGEN are set to 1. It

will enforce microcontroller reset to initial condition just like power on reset.

This action will re-boot the microcontroller and start to normal operation. To

read this bit in logic-1 can determine that the H/W REBOOT mode is running.

Reserve.

Reserve

FBOOTSL

The Program Location Select.

0: The Loader Program locates at the 64 KB AP Flash EPROM. 4KB LD

Flash EPROM is destination for re-programming.

1: The Loader Program locates at the 4 KB memory bank. 64KB AP Flash

EPROM is destination for re-programming.

FPROGEN FLASH EPROM Programming Enable.

= 1: enable. The microcontroller enter the in-system programming mode after

entering the idle mode and wake-up from interrupt. During in-system

programming mode, the operation of erase, program and read are

achieve when device enters idle mode.

= 0: disable. The on-chip flash memory is read-only. In-system

programmability is disabled.

W78ERD2 Datasheet(PDF) 21 Page - Winbond

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