AN87C196KDF8 Datasheet, PDF (20/21 Pages) Intel Corporation – 16-BIT HIGH PERFORMANCE CHMOS MICROCONTROLLER

AUTOMOTIVE 87C196KD
8-BIT MODE A D CHARACTERISTICS
The 8-bit mode trades off resolution for a faster con-
version time The AD TIME register must be used
when performing an 8-bit conversion
The following specifications are tested 16 MHz
with OA6H in AD TIME The actual AD TIME reg-
ister is tested with all possible values to ensure
functionality but the accuracy of the A D converter
is not
Sample Time
20 States
Convert Time
56 States
A6H in AD TIME
9 8 ms 16 MHz
Parameter
Resolution
Absolute Error
Full Scale Error
Zero Offset Error
Non-Linearity
Differential Non-Linearity Error
Channel-to-Channel Matching
Repeatability
Temperature Coefficients
Offset
Full Scale
Differential Non-Linearity
Typical
g1
g2
g0 25
0 003
0 003
0 003
Minimum
256
8
0
0
lb₁
Maximum
256
8
g2
g2
a₁
g1
Units
Levels
Bits
LSBs
LSBs
LSBs
LSBs
LSBs
LSBs
LSBs
LSB C
LSB C
LSB C
Notes
NOTES
An ‘‘LSB’’ as used here has a value of approximately 20 mV
1 Typical values are expected for most devices at 25 C
8XC196KB TO 87C196KD DESIGN
CONSIDERATIONS
1 Memory Map The 87C196KD has 512 bytes of
RAM SFRs and 32K of ROM EPROM The extra
256 bytes of RAM will reside in locations 100H –
1FFH and the extra 24K of EPROM will reside in
locations 4000H–9FFFH These locations are
external memory on the 87C196KB
2 The CDE pin on the KB has become a V_SS pin on
the KC to support 16 MHz operation
3 EPROM programming The 87C196KD has a dif-
ferent programming algorithm to support 32K of
on-board memory When performing Run-Time
Programming use the section of code on page
99 of the 80C196KC User’s Guide Order Num-
ber 270704
4 ONCE Mode Entry The ONCE mode is entered
on the 87C196KD by driving the TXD pin low on
the rising edge of RESET The TXD pin is held
high by a pullup that is specified at 1 4 mA and
remain at 2 0V This Pullup must not be overrid-
den or the 87C196KD will enter the ONCE mode
5 During the bus HOLD state the 87C196KD weak-
ly holds RD WR ALE BHE and INST in their
inactive states The 87C196KB only holds ALE in
its inactive state
6 A RESET pulse from the 87C196KD is 16 states
rather than 4 states as on the 87C196KB (i e a
watchdog timer overflow) This provides a longer
RESET pulse for other devices in the system
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