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8XC196MC, MD, MH USER'S MANUAL
15.4
WAIT STATES (READY CONTROL)......................................................................... 15-17
15.5
BUS-CONTROL MODES........................................................................................... 15-21
15.5.1
Standard Bus-control Mode ..................................................................................15-22
15.5.2
Write Strobe Mode ................................................................................................15-25
15.5.3
Address Valid Strobe Mode ..................................................................................15-27
15.5.4
Address Valid with Write Strobe Mode ..................................................................15-30
15.6
SYSTEM BUS AC TIMING SPECIFICATIONS ......................................................... 15-31
15.6.1
Explanation of AC Symbols ..................................................................................15-33
15.6.2
AC Timing Definitions ...........................................................................................15-33
CHAPTER 16
16.1
PROGRAMMING METHODS ...................................................................................... 16-1
16.2
OTPROM MEMORY MAP ........................................................................................... 16-2
16.3
SECURITY FEATURES............................................................................................... 16-3
16.3.1
Controlling Access to Internal Memory ...................................................................16-3
16.3.1.1
Controlling Access to the OTPROM During Normal Operation ..........................16-4
16.3.1.2
Controlling Access to the OTPROM During Programming Modes .....................16-4
16.3.2
Controlling Fetches from External Memory .............................................................16-6
16.4
PROGRAMMING PULSE WIDTH ............................................................................... 16-8
16.5
MODIFIED QUICK-PULSE ALGORITHM.................................................................... 16-9
16.6
PROGRAMMING MODE PINS.................................................................................. 16-11
16.7
ENTERING PROGRAMMING MODES ..................................................................... 16-13
16.7.1
Selecting the Programming Mode .........................................................................16-13
16.7.2
Power-up and Power-down Sequences ................................................................16-14
16.7.2.1
Power-up Sequence .........................................................................................16-14
16.7.2.2
Power-down Sequence ....................................................................................16-14
16.8
SLAVE PROGRAMMING MODE............................................................................... 16-15
16.8.1
Reading the Signature Word and Programming Voltages ....................................16-15
16.8.2
Slave Programming Circuit and Memory Map ......................................................16-16
16.8.3
Operating Environment .........................................................................................16-17
16.8.4
Slave Programming Routines ...............................................................................16-19
16.8.5
Timing Mnemonics ................................................................................................16-24
16.9
AUTO PROGRAMMING MODE ................................................................................ 16-25
16.9.1
Auto Programming Circuit and Memory Map ........................................................16-25
16.9.2
Operating Environment .........................................................................................16-27
16.9.3
Auto Programming Routine ...................................................................................16-27
16.9.4
Auto Programming Procedure ..............................................................................16-29
16.9.5
ROM-dump Mode .................................................................................................16-30
16.10 PCCB AND UPROM PROGRAMMING (8XC196MH ONLY) .................................... 16-30
16.11 RUN-TIME PROGRAMMING .................................................................................... 16-32
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