8XC151SASB HIGH-PERFORMANCE CHMOS MICROCONTROLLER

UCONFIG0

Address FFF8H

7

0

WSA1

WSA0

XALE

PAGE

Bit

Bit

Function

Number

Mnemonic

7

Reserved

65

WSA1

Wait State Select for external code

WSA0

WSA1

WSA0

Description

(see Note)

1

1

No wait states

1

0

Insert 1 wait state

0

1

Insert 2 wait states

0

0

Insert 3 wait states

4

XALE

Extend Ale

one external wait state

1

PAGE

Page Mode Select

Clear this bit for page-mode (A158D70 on P2 and A70 on P0) Set

this bit for nonpage-mode (A158 on P2 and A70D70 on P0

(compatible with MCS 51 microcontrollers))

NOTE

Factory-programmed ROM and OTPROM versions of 8XC151SASB use configuration byte information supplied in a

separate hexadecimal disk file 8XC151SASB devices without internal ROMOTPROM arrays fetch configuration byte

information from external application memory based on an internal address range of FFF98H

Figure 17 Configuration Byte 0

30