SAB88C166 Datasheet, PDF(11/58 Page) Siemens Semiconductor Group – 16-Bit CMOS Single-Chip Microcontrollers with/without oscillator prescaler with 32 KByte Flash EPROM

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SAB88C166 Datasheet, PDF (11/58 Pages) Siemens Semiconductor Group – 16-Bit CMOS Single-Chip Microcontrollers with/without oscillator prescaler with 32 KByte Flash EPROM

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SAB 88C166(W)

FCR (FFA0H / D0H)

15 14 13 12 11 10

FWM

SET -

rw rw rw rw rw rw

SFR

WDW

CKCTL

Reset Value: 00X0H*)

43210

VPP FC FBUSY

REV VPP RPROT FEE FWE

r rw r/w rw rw

Bit

FWE

FEE

FBUSY

Function

Flash Write Enable Bit (see description below)

0 : Flash write operations (program / erase) disabled

1 : Flash write operations (program / erase) enabled

Flash Erase Enable Bit (Significant only, when FWE = â1â, see description below)

0 : Flash programming mode selected

1 : Flash erase mode selected

Flash Busy Bit (On read accesses)

0 : No Flash write operation in progress

1 : Flash write operation in progress

RPROT

FCVPP

VPPREV

CKCTL

WDWW

FWMSET

Flash Read Protection Activation Bit (On write accesses)

0 : Deactivates Flash read protection

1 : Activates Flash read protection, if this is enabled

Flash Control VPP Bit

0 : No VPP failure occurred during a Flash write operation

1 : VPP failure occurred during a Flash write operation

Flash VPP Revelation Bit

0 : No valid VPP applied to pin VPP

1 : VPP applied to pin VPP is valid

Internal Flash Timer Clock Control

Determines the width of an internal Flash write or erase pulse

Word / Double Word Writing Bit (significant only in programming mode)

0 : 16-bit programming operation

1 : 32-bit programming operation

Bank Erase Select (significant only in erasing mode)

Selects the Flash Bank to be erased

Flash Writing Mode Set Bit (see description below)

0 : Exit Flash writing mode, return to standard mode

1 : Stay in Flash writing mode

*) The reset value of bit VPPREV depends on the voltage on pin VPP.

Note: The FCR is no real register but is rather virtually mapped into the active address space of the

Flash memory while the Flash writing mode is active. In writing mode all direct (mem)

accesses refer to the FCR, while all indirect ([Rwn]) accesses refer to the Flash memory

array itself.

Semiconductor Group

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