80C196KC datasheet(23/25 Pages) INTEL

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8XC196KC8XC196KC20

SLAVE PROGRAMMING MODE TIMING IN DATA PROGRAM

WITH REPEATED PROG PULSE AND AUTO INCREMENT

270942 – 29

8XC196KB TO 8XC196KC DESIGN

CONSIDERATIONS

1 Memory Map The 8XC196KC has 512 bytes of

RAMSFRs

and

optional

16K

ROMOTPROM The extra 256 bytes of RAM will

reside in locations 100H – 1FFH and the extra 8K

ROMOTPROM

will

reside

locations

4000H – 5FFFH

These locations are external

memory on the 8XC196KB

2 The CDE pin on the KB has become a VSS pin on

the KC to support 1620 MHz operation

3 EPROM programming The 8XC196KC has a dif-

ferent programming algorithm to support 16K of

on-board memory When performing Run-Time

Programming use the section of code in the

8XC196KC User’s Guide

4 ONCE Mode Entry The ONCE mode is entered

on the 8XC196KC by driving the TXD pin low on

the rising edge of RESET The TXD pin is held

high by a pullup that is specified by IOH1 This

Pullup must not be overridden or the 8XC196KC

will enter the ONCE mode

5 During the bus HOLD state

the 8XC196KC

weakly holds RD WR ALE BHE and INST in

their inactive states The 8XC196KB only holds

ALE in its inactive state

6 A RESET pulse from the 8XC196KC is 16 states

rather than 4 states as on the 8XC196KB (ie a

watchdog timer overflow) This provides a longer

RESET pulse for other devices in the system

8XC196KC ERRATA

1 Missed EXTINT on P07

The

80C196KC20

could

possibly

miss

EXTINT on P07 See techbit MC0893

HSI

MODE divide-by-eight

See Faxback

2192

IPD hump

See Faxback

2311

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