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IA2910A
Microprogram Controller
IA2910A
Microprogram Controller
Data Sheet
Data Sheet
August 19, 2008
IA211030314-03
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IA2910A
Microprogram Controller
Data Sheet
August 19, 2008
Copyright 2008 by Innovasic Semiconductor, Inc.
Published by Innovasic Semiconductor, Inc.
3737 Princeton Drive NE, Suite 130, Albuquerque, NM 87107
fido®, fido1100®, and SPIDER are trademarks of Innovasic Semiconductor, Inc.
I2CBus is a trademark of Philips Electronics N.V.
Motorola is a registered trademark of Motorola, Inc.
IA211030314-03
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IA2910A
Microprogram Controller
Data Sheet
August 19, 2008
TABLE OF CONTENTS
Features ........................................................................................................................................... 4
Description...................................................................................................................................... 5
Functional Block Diagram .......................................................................................................... 6
Functional Overview................................................................................................................... 7
I/O Signal Description ................................................................................................................ 9
Theory of Operation.................................................................................................................. 10
Instruction Set Description........................................................................................................ 11
Instruction Set ............................................................................................................................... 11
Commercial AC/DC Parameters................................................................................................... 16
Absolute Maximum Ratings ..................................................................................................... 16
Commercial DC Characteristics ................................................................................................... 16
Military AC Characteristics .......................................................................................................... 17
Military DC Characteristics .......................................................................................................... 17
Execution Examples ..................................................................................................................... 18
Packaging Information .................................................................................................................. 19
Ordering Information .................................................................................................................... 21
Revision History ........................................................................................................................... 21
IA211030314-03
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IA2910A
Microprogram Controller
Data Sheet
August 19, 2008
Features
Form, Fit, and Function Compatible with the AMDAm2910A
Packaging options available: 40 Pin Ceramic DIP or 44 Pin Plastic Leaded
Chip Carrier
Twelve Bits Wide
Internal Loop Counter
Four Address Sources
- push/pop stack counter
- internal holding register
- microprogram counter
- branch address bus
9 Word Deep Stack Register
- push/pop control for nesting subroutines
16 Sequence Control Microinstructions
Output Enable controls 3 Branch Address Sources
The IA2910A is a "plug-and-play" drop-in replacement for the original IC. innovASIC produces replacement
ICs using its MILESTM, or Managed IC Lifetime Extension System, cloning technology. This technology
produces replacement ICs far more complex than "emulation" while ensuring they are compatible with the
original IC. MILESTM captures the design of a clone so it can be produced even as silicon technology
advances. MILESTM also verifies the clone against the original IC so that even the "undocumented features"
are duplicated. This data sheet documents all necessary engineering information about the IA2910 including
functional and I/O descriptions, electrical characteristics, and applicable timing.
Package Pinout
YOUT4
DIN4
YOUT5
DIN5
VECTn
PLn
MAPn
I3
I2
VCC
I1
I0
CCENn
CCn
RLDn
FULLn
DIN6
YOUT6
DIN7
YOUT7
(1) IA2910A
(2) 40 Pin DIP
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(40)
(39)
(38)
(37)
(36)
(35)
(34)
(33)
(32)
(31)
(30)
(29)
(28)
(27)
(26)
(25)
(24)
(23)
(22)
(21)
DIN3
YOUT3
DIN2
YOUT2
DIN1
YOUT1
DIN0
YOUT0
CIN
CLK
VDD
OEn
YOUT11
DIN11
YOUT10
DIN10
YOUT9
DIN9
YOUT8
DIN8
PLn
MAPn
I3
I2
VCC
I1
I0
CCENn
CCn
RLDn
N.C.
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
IA2910A
44 Pin LCC
(39) YOUT1
(38) DIN0
(37) YOUT0
(36) N. C.
(35) CIN
(34) CLK
(33) VDD
(32) N. C.
(31) OEn
(30) YOUT11
(29) DIN11
IA211030314-03
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IA2910A
Microprogram Controller
Data Sheet
August 19, 2008
Description
The IA2910A is a form, fit and function compatible part to the AMD 2910A microprogram
controller. The IA2910A is an address controller which will sequence through a series of
microinstructions contained in a ROM or PROM. There are four sources of addresses from which
the IA2910A may select. The first is a direct data bus (DIN) input, which is straightforward. The
second is an internal address register. This register contains data loaded during a previous
microinstruction. The third source is a program counter register, which generally contains the
previous address incremented by one. The final source of addresses is a nine word deep stack
register which gives the capability to execute nested subroutine linkages. All internal registers are
clocked on the rising edge of the clock input (CLK). An OEn input enables the YOUT output bus
to be tri-stated. A block diagram is shown in Figure 1.
IA211030314-03
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