87C196JQ Intel Corporation, 87C196JQ Datasheet - Page 25

• Manufacturer Part Number: 87C196JQ
• Description: ADVANCED 16-BIT CHMOS MICROCONTROLLER
• Manufacturer: Intel Corporation

10 EPA Channels 4 through 7
DATASHEET REVISION HISTORY
This is the -006 version of the 87C196KR Data-
sheet The following differences exist between the
-005 version and the -006 version
1 The 87C196JV datasheet status has been
Register RAM
Internal (Code) RAM
Internal ROM EPROM 2000h to 4FFFh 2000h to 5FFFh
moved from ‘‘Product Preview’’ to that of ‘‘no
marking ’’
It is important to note that the internal to exter-
nal memory roll-over point for both the JR and
JQ devices is the same (6000h and above goes
external)
should follow to insure no problems are encoun-
tered when using JQ devices are
a) For JQ devices the program must contain a
b) For JQ devices with EA
The JR C-step device is simply a 68-lead KR-C
device packaged in a 52-lead package The re-
duced pin-out is achieved by not bonding-out
the unsupported pins EPA4 – EPA7 are among
these pins that are not bonded-out The fact
that EPA4 – EPA7 are still present allows the
programmer to use these channels as software
timers to start A D conversions reset timers
etc All of the port pin logic is still present and it
is possible to use the EPA to toggle these pins
internally Please refer to the 52-Lead Device
section in this datasheet for further information
On the JR D-step the EPA4 – EPA7 logic has
NOT been removed from the device This al-
lows the programmer to still use these channels
(as on the C-step) for software timers etc The
only difference is that the associated port pin
logic has been removed and does not exist in-
ternally To maintain C-step to D-step compati-
bility programmers should make sure that their
software does not rely upon the removed pins
jump to a location greater than 5FFFh before
the 12K boundary (4FFFh) is reached This
is necessary only if greater than 12K of pro-
gram memory is required with a JQ device
and portions of the program execute from in-
ternal ROM EPROM
only internal program memory from 2000h to
4FFFh Do not use the unsupported loca-
tions from 5000h to 5FFFh
Two guidelines the programmer
JQ C and D-Step JR C and D-Step
18h to 17Fh
400h to 47Fh
tied to ground use
18h to 1FFh
400h to 4FFh
87C196KR KQ 87C196JV JT 87C196JR JQ
2 A ‘‘by design’’ note was added to the T
3 In the Design Considerations section the
4 Only the two most current revision histories of
The following differences exist between the -004
version and the -005 version
1 The 87C196JT and 87C196JV 16 MHz devices
2 The status of the datasheet has been moved
3 The title of the datasheet as well as the features
4 Notes were added as appropriate to call out
5 The V
6 A V
7 All 87C196KR A-step errata was removed from
8 For the JT the DC input leakage (max) as speci-
9 CerQuad package references have been re-
specification
CLKOUT design consideration was corrected
this datasheet were retained in the datasheet re-
vision history section
were added to the list of products covered by this
datasheet The 87C196JT and 87C196JV are
simply higher memory versions of the 87C196JR
device For 20 MHz datasheets of these devices
please refer to the following datasheets
from ‘‘Advanced Information’’ to that of no-mark-
ing Datasheets with no markings reflect specifi-
cations that have reached full production status
Although the 87C196JV device is included within
this datasheet its specifications are actually at
the design phase of development Do not finalize
a design with this information Revised informa-
tion will be published when the 87C196JV device
becomes available
and design considerations list has been revised
to include the 87C196JT and 87C196JV devices
where 87C196JV specifications are expected to
differ from those of other products listed within
this datasheet Specifications which are expected
to differ are I
Leakage on A D channels
with more comprehensive I
fications
ed to indicate the strength of the RESET pull-
down device
the Errata section of this datasheet
fied in the previous JT datasheet (272374-002)
has been corrected to 2
specification of 2
specify the same parameter
moved
20 MHz 87C196JT order
20 MHz 87C196JV order
OL3
OH2
(RESET pin only) specification was add-
(min) specification was supplemented
CC
I
CC1
A These specifications both
I
IDLE
OH2
and I
A to match the I
272529-001
272580-001
(min max) speci-
LI
and DC Input
RLAZ
25
7
LI