Key Features .................................................................................................................................................................3
Microcontroller Bus Interface ................................................................................................................................7
JTAG Port .............................................................................................................................................................7
Power Management Unit ......................................................................................................................................8
Development System ....................................................................................................................................................9
General Purpose PLD (GPLD)......................................................................................................................33
Microcontroller Bus Interface ..............................................................................................................................35
Interface to a Multiplexed 8-bit Bus...............................................................................................................35
Interface to a Non-multiplexed 8-bit Bus .......................................................................................................35
General Port Architecture..............................................................................................................................42
Port Operating Modes ...................................................................................................................................44
Port Configuration Registers (PCRs) ............................................................................................................47
Port Data Registers.......................................................................................................................................49
Ports A and B – Functionality and Structure .................................................................................................49
Port C – Functionality and Structure .............................................................................................................51
Port D – Functionality and Structure .............................................................................................................51
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PSD9XX Family
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Configurable Memory System on a Chip for 8-Bit Microcontrollers
Table of Contents
Power Management............................................................................................................................................54
Automatic Power Down (APD) Unit and Power Down Mode ........................................................................54
Other Power Savings Options.......................................................................................................................58
Reset and Power On Requirement ...............................................................................................................59
Programming In-Circuit using the JTAG Interface ..............................................................................................60
Standard JTAG Signals.................................................................................................................................61
Security and Flash Memories Protection ......................................................................................................61
Absolute Maximum Ratings.........................................................................................................................................62
Operating Range .........................................................................................................................................................62
Example of Typical Power Calculation at Vcc = 5..0 V .......................................................................................64
Example of Typical Power Calculation at Vcc = 5..0 V in Turbo Off Mode .........................................................65
DC Characteristics (5 V ± 10% versions) ....................................................................................................................66
Microcontroller Interface – AC/DC Parameters (5 V ± 10% versions).........................................................................67
Power Down Timing............................................................................................................................................70
AC Testing Input/Output Waveforms...........................................................................................................................81
AC Testing Load Circuit...............................................................................................................................................81
Part Number Construction ...........................................................................................................................................87
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