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PDF AM29C101 Data sheet ( Hoja de datos )
| Número de pieza | AM29C101 | |
| Descripción | 16-Bit CMOS Microprocessor Slice | |
| Fabricantes | AMD | |
| Logotipo |  |
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Am29C101
16-Bit CMOS Microprocessor Slice
DISTINCTIVE CHARACTERISTICS
• Compatible to Am2901C
The Am29C101 is a low-power CMOS 16-bit version of
the Am2901 C, expandable to longer word lengths.
• Two-address architecture
Independent simultaneous access to two working regis-
ters saves machine cycles.
• Eight-function ALU
I Performs addition, two subtraction operations, and five
logic functions on two source operands.
• Expandable
Connect any number of Am29C1 01 s together for longer
word lengths.
• Left/right shift independent of ALU
Add and shift operations take only one cycle.
• Flexible data source selection
ALU data is selected from five source ports for a total of
203 source operand pairs for every ALU function.
GENERAL DESCRIPTION
The Am29C101 16-Bit CMOS Microprocessor Slice is a
high-speed cascadable ALU intended for use in CPUs,
peripheral controllers, and programmable microprocessors.
The microinstruction flexibility of the Am29C101 permits
efficient emulation of almost any digital computing ma-
chine.
The device, as shown in the block diagram, consists of a
16-word by 16-bit two-port RAM, a high-speed ALU, and
the associated shifting, decoding and multiplexing circuitry.
The 9-bit microinstruction word is organized into three
groups of 3 bits each and selects the ALU source oper-
ands, the ALU function, and the ALU destination register.
The microprocessor is cascadable with full look ahead or
with ripple carry, has three-state outputs, and provides
various status-flag outputs from the ALU.
The Am29C101 is compatible with the Am2901C and is
processed in low-power CMOS.
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-
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. Issue Date: April 1987
1 page  
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order number (Valid
Combination) is formed by a combination of: a. Device Number
b. Speed Option (if applicable)
c. Package Type
d. Temperature Range
e. Optional Processing
AM29C101
J!.
I - - - - - -e. OPTIONAL PROCESSING
Blank = Standard Processing
B = Burn-in
' - - - - - - - - - - d . TEMPERATURE RANGE
C = Commercial (0 to + 70DC)
' - - - - - - - - - - - - - - c . PACKAGE TYPE
P = 64-Pin Plastic DIP (PO 064)
0= 64-Pin Topbrazed Ceramic DIP (TDX064)
J = 68-Pin Plastic Leaded Chip Carrier
(PL 068)
L = 68-Pin ceramic Leadless Chip Carrier
(CL 068)
G = 68-Terminal Pin Grid Array (CGX068)
X = Dice
' - - - - - - - - - - - - - - - - - - b . SPEED OPTION
Blank = Standard
-1 = Speed Selected
- a. DEVICE NUMBER/DESCRIPTION
Am29C101
16-Bit CMOS Microprocessor Slice
Valid Combinations
AM29C101
PC, PCB, DC, DCB,
JC, JCB, LC, GC,
GCB, XC
AM29C101-1
PC, PCB, DC,
DCB, JC, JCB, GC,
GCB
Valid Combinations
Valid Combinations list configurations planned to be
supported in volume for this device. Consult the local AMD
sales office to confirm availability of specific valid
combinations, to check on newly released combinations, and
to obtain additional data on AMD's standard military grade
products.
5 Page 
TABLE 5. ALU LOGIC MODE FUNCTIONS
Octal
1543. 1210
40
41
45
46
30
31
35
36
60
61
65
66
70
71
75
76
72
73
74
77
62
63
64
67
32
33
34
37
42
43
44
47
50
51
55
56
Group
AND
OR
EX-OR
EX-NOR
INVERT
PASS
PASS
"ZERO"
MASK
Function
AI\Q
AI\B
DI\A
DI\Q
AvQ
AvB
OVA
DvQ
A-¥-Q
A-¥-B
D-¥-A
D-¥-Q
A-¥-Q
A-¥-B
D-¥-A
D-¥-Q
Q
B
A
B
Q
B
A
0
Q
B
A
0
0
0
0
0
AI\Q
AI\B
BI\A
BI\Q
TABLE 6. ALU ARITHMETIC MODE FUNCTIONS
Octal
1543.
1210
00
o1
05
06
02
03
04
07
12
13
14
27
22
23
24
17
10
11
15
16
20
21
25
26
Cln=L
Cln=H
Group
ADD
PASS
Decrement
1's Comp.
Subtract
(1's Comp)
Function
A+Q
A+B
O+A
O+Q
Q
B
A
0
Q-1
B-1
A-1
0-1
-Q-1
-B-1
-A-1
-0-1
Q-A-1
B-A-1
A-0-1
Q-0-1
A-Q-1
A-B-1
0-A-1
0-Q-1
Group
ADD plus
one
Increment
PASS
2's Comp.
(Negate)
Subtract
(2's Comp)
Function
A+Q+ 1
A+B+1
0+A+1
0+Q+1
Q+ 1
B+1
A+1
0+1
Q
B
A
0
-Q
-B
-A
-0
Q-A
B-A
A-O
Q-O
A-Q
A-B
O-A
O-Q
Source Operands and ALU Functions
There are eight source operand pairs available to the ALU as
selected by the 10, 11, and 12 instruction inputs. The ALU can
perform eight functions; five logic and three arithmetic. The 13,
14, and 15 instruction inputs control this function selection. The
carry input, Gin, also affects the ALU results when in the
arithmetic mode. The Gin input has no effect in the logic mode.
When 10 through 15 and Gin are viewed together, the matrix of
Table 4 results. This matrix fully defines the ALU/source
operand function for each state.
The ALU functions can also be examined on a "task" basis,
i.e., add, subtract, AND, OR, etc. In the arithmetic mode, the
carry will affect the function performed, while in the logic mode
the carry will have no bearing on the ALU output. Table 5
defines the various logic operations that the Am29G101 can
perform, and Table 6 shows the arithmetic functions of the
device. Both carry-in LOW (Gin = 0) and carry-in HIGH
(Gin = 1) are defined in these operations.
Logic Functions for G, P, Cn + 16, and OVR
The four signals G, P, Gn + 16, and OVR are designed to
indicate carry and overflow conditions when the Am29G101 is
in the add or subtract mode. Table 7 indicates the logic
equations for these four signals for each of the eight' ALU
functions. In a logical operation, P and G are always HIGH;
OVR and Gn + 16 are LOW. The Rand S inputs are the two
inputs selected according to Table 1.
11
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet AM29C101.PDF ] | |
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