83C151SB Intel Corporation, 83C151SB Datasheet - Page 30

• Manufacturer Part Number: 83C151SB
• Description: HIGH-PERFORMANCE CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

8XC151SA SB HIGH-PERFORMANCE CHMOS MICROCONTROLLER
30
NOTE
Factory-programmed ROM and OTPROM versions of 8XC151SA SB use configuration byte information supplied in a
separate hexadecimal disk file 8XC151SA SB devices without internal ROM OTPROM arrays fetch configuration byte
information from external application memory based on an internal address range of FFF9 8H
UCONFIG0
Number
7
Bit
6 5
7
4
1
WSA1
Mnemonic
(see Note)
WSA1
WSA0
PAGE
XALE
Bit
WSA0
Reserved
Wait State Select for external code
WSA1
Extend Ale
If this bit is set the time of the ALE pulse is T
extends the time of the ALE pulse from T
one external wait state
Page Mode Select
Clear this bit for page-mode (A15 8 D7 0 on P2 and A7 0 on P0) Set
this bit for nonpage-mode (A15 8 on P2 and A7 0 D7 0 on P0
(compatible with MCS 51 microcontrollers))
1
0
0
1
Figure 17 Configuration Byte 0
WSA0
XALE
1
0
1
0
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No wait states
Insert 1 wait state
Insert 2 wait states
Insert 3 wait states
Description
Function
OSC
OSC
to 3T
Clearing this bit
OSC
PAGE
which adds
Address FFF8H
0