87C196 Intel Corporation, 87C196 Datasheet - Page 12

• Manufacturer Part Number: 87C196
• Description: CHMOS 16-BIT MICROCONTROLLER
• Manufacturer: Intel Corporation

87C196CA 87C196CB
12
CCB
Mode 0
(1-Wait KR)
Mode 3 (KR) Designed to be similar to the 87C196KR bus
0
1
2
3
4
5
6
7
MSEL1 MSEL0
LOC1
LOC0
LOC1
0
0
1
1
IRC0
IRC1
BW0
0
0
1
1
ALE
WR
PD
(2018h Byte)
e
e
e
e
e
e
e
e
See AC Timings section for actual timings data
See AC Timings section for actual timings data
Designed to be similar to the 87C196KR bus
timing with 1 automatic wait state
timing
LOC0
0
1
0
1
‘‘1’’ Enables Powerdown
See Table
‘‘1’’
‘‘1’’
See Table
See Table
See Table
See Table
0
1
0
1
e
e
WR
ALE ‘‘0’’
Mode 0 (1-Wait KR)
Reserved Must Not Be Used
Reserved Must Not Be Used
Mode 3 (KR)
Read and Write Protected
Write Protected Only
Read Protected Only
No Protection
‘‘CB’’ Bus Timing Mode
0
1
2
3
4
5
6
7
CCB2 (201Ch Byte) (CB Only)
BHE ‘‘0’’
MODE16
REMAP
e
ADV
0
1
1
1
1
1
Function
e
WRL
e
e
e
e
e
e
e
e
Reserved Must be ‘‘0’’
Select 16-Bit or 24-Bit Mode
Reserved Must be ‘‘1’’
Reserved Must be ‘‘1’’
Reserved Must be ‘‘1’’
Reserved Must be ‘‘1’’
Reserved Must be ‘‘1’’
WRH
‘‘0’’ Select EPROM CODERAM in Segment 0FFH only
‘‘1’’ Select Both Segment 0FFH and Segment 00H
CCB1 (201Ah Byte)
IRC2
BW1
0
1
1
1
1
0
0
1
1
0
1
2
3
4
5
6
7
IRC1
0
0
0
1
1
MEMSEL0
MEMSEL1
CCR2
IRC2
BW1
WDE
BW0
1
0
0
1
0
1
IRC0
0
0
1
0
1
e
e
e
e
e
e
e
e
‘‘1’’ fetch CCB2 (‘‘0’’ for CA)
See Table
See Table
‘‘0’’
Reserved Must Be ‘‘1’’
Reserved Must Be ‘‘0’’
See Table (‘‘1’’ for CA)
See Table (‘‘1’’ for CA)
ILLEGAL
16-Bit Only
8-Bit Only
BW Pin Controlled
Max Wait States
Zero Wait States
1 Wait State
2 Wait States
3 Wait States
INFINITE
e
Bus Width
Always Enabled