Intel 8XC196K Series User Manual page 11

CONTENTS
13.2 APPLYING AND REMOVING POWER ....................................................................... 13-4
13.3 NOISE PROTECTION TIPS ........................................................................................ 13-4
13.4 PROVIDING THE CLOCK ........................................................................................... 13-5
13.4.1 Using the On-chip Oscillator ...................................................................................13-5
13.4.2 Using a Ceramic Resonator Instead of a Crystal Oscillator ....................................13-7
13.4.3 Providing an External Clock Source ........................................................................13-7
13.5 RESETTING THE DEVICE.......................................................................................... 13-8
13.5.1 Generating an External Reset ...............................................................................13-10
13.5.2 Issuing the Reset (RST) Instruction ......................................................................13-12
13.5.3 Issuing an Illegal IDLPD Key Operand .................................................................13-12
13.5.4 Enabling the Watchdog Timer ...............................................................................13-12
13.5.5 Detecting Oscillator Failure ...................................................................................13-12
CHAPTER 14
SPECIAL OPERATING MODES
14.1 SPECIAL OPERATING MODE SIGNALS AND REGISTERS..................................... 14-1
14.2 REDUCING POWER CONSUMPTION ....................................................................... 14-3
14.3 IDLE MODE ................................................................................................................. 14-3
14.4 POWERDOWN MODE ............................................................................................... 14-4
14.4.1 Enabling and Disabling Powerdown Mode ..............................................................14-4
14.4.2 Entering Powerdown Mode .....................................................................................14-5
14.4.3 Exiting Powerdown Mode .......................................................................................14-5
14.4.3.1 Driving the V
14.4.3.2 Generating a Hardware Reset ...........................................................................14-6
14.4.3.3 Asserting the External Interrupt Signal ...............................................................14-6
14.4.3.4 Selecting R
14.5 ONCE MODE............................................................................................................... 14-9
14.5.1 Entering and Exiting ONCE Mode ..........................................................................14-9
14.6 RESERVED TEST MODES....................................................................................... 14-10
CHAPTER 15
INTERFACING WITH EXTERNAL MEMORY
15.1 EXTERNAL MEMORY INTERFACE SIGNALS........................................................... 15-1
15.2 CHIP CONFIGURATION REGISTERS AND CHIP CONFIGURATION BYTES ......... 15-4
15.3 BUS WIDTH AND MULTIPLEXING............................................................................. 15-8
15.3.1 Timing Requirements for BUSWIDTH ...................................................................15-10
15.3.2 16-bit Bus Timings ................................................................................................15-11
15.3.3 8-bit Bus Timings ..................................................................................................15-13
15.4 WAIT STATES (READY CONTROL)......................................................................... 15-14
15.5 BUS-HOLD PROTOCOL (8XC196KQ, KR, KS, KT ONLY) ...................................... 15-17
15.5.1 Enabling the Bus-hold Protocol (8XC196K x Only) ................................................15-18
Disabling the Bus-hold Protocol (8XC196K x Only) ...............................................15-19
15.5.2
15.5.3 Hold Latency (8XC196K x Only) ............................................................................15-19
x
Pin Low ......................................................................................14-5
pp
and C ...........................................................................................14-7
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