32192 datasheet(16/1044 Pages) RENESAS

16 / 1044 page

Contents-10

32192/32195/32196 Group Hardware Manual

Rev.1.10 REJ09B0123-0110 Apr.06.07

16.5 RAM Monitor Function -------------------------------------------------------------------------------------------------- 16-8

16.5.1

Description of NBD Operation ------------------------------------------------------------------------------- 16-8

16.5.2

NBDD Data Format -------------------------------------------------------------------------------------------- 16-9

16.6 Event Detection Function ----------------------------------------------------------------------------------------------- 16-11

16.6.1

Event Address Setting Register ---------------------------------------------------------------------------- 16-11

16.6.2

Event Condition Setting Register --------------------------------------------------------------------------- 16-12

16.6.3

Event Generation Register ----------------------------------------------------------------------------------- 16-12

CHAPTER 17 EXTERNAL BUS INTERFACE

17.1 Outline of the External Bus Interface -------------------------------------------------------------------------------- 17-2

17.1.1

External Bus Interface Related Signals ------------------------------------------------------------------- 17-2

17.2 External Bus Interface Related Registers -------------------------------------------------------------------------- 17-5

17.2.1

Port Operation Mode and Port Peripheral Function Select Registers ----------------------------- 17-5

17.2.2

Bus Mode Control Register ---------------------------------------------------------------------------------- 17-15

17.2.3

CLKOUT Select Register ------------------------------------------------------------------------------------- 17-16

17.3 Read/Write Operations -------------------------------------------------------------------------------------------------- 17-19

17.4 Bus Arbitration ------------------------------------------------------------------------------------------------------------ 17-25

17.5 Typical Connection of External Extension Memory -------------------------------------------------------------- 17-27

17.6 Example of Bus Voltage Settings Using VCC-BUS -------------------------------------------------------------- 17-30

CHAPTER 18 WAIT CONTROLLER

18.1 Outline of the Wait Controller ------------------------------------------------------------------------------------------ 18-2

18.2 Wait Controller Related Registers ------------------------------------------------------------------------------------ 18-4

18.2.1

CS Area Wait Control Registers ---------------------------------------------------------------------------- 18-4

18.2.2

Flash E/W Wait Select Register ---------------------------------------------------------------------------- 18-6

18.3 Typical Operation of the Wait Controller ---------------------------------------------------------------------------- 18-7

CHAPTER 19 RAM BACKUP MODE

19.1 Outline of RAM Backup Mode ----------------------------------------------------------------------------------------- 19-2

19.2 Example of RAM Backup when Power is Off --------------------------------------------------------------------------- 19-3

19.2.1

Normal Operating State --------------------------------------------------------------------------------------- 19-3

19.2.2

RAM Backup State --------------------------------------------------------------------------------------------- 19-4

19.3 Example of RAM Backup for Saving Power Consumption ------------------------------------------------------ 19-5

19.3.1

Normal Operating State --------------------------------------------------------------------------------------- 19-6

19.3.2

RAM Backup State --------------------------------------------------------------------------------------------- 19-7

19.3.3

Precautions to Be Observed at Power-On ---------------------------------------------------------------- 19-8

19.3.4

Power-On Limitation -------------------------------------------------------------------------------------------- 19-8

19.4 Exiting RAM Backup Mode (Wakeup) ------------------------------------------------------------------------------- 19-9

CHAPTER 20 OSCILLATOR CIRCUIT

20.1 Oscillator Circuit ---------------------------------------------------------------------------------------------------------- 20-2

20.1.1

Example of an Oscillator Circuit ----------------------------------------------------------------------------- 20-2

20.1.2

XIN Oscillation Stoppage Detection Circuit --------------------------------------------------------------- 20-3

20.1.3

Oscillation Drive Capability Select Function -------------------------------------------------------------- 20-5

20.1.4

System Clock Output Function ------------------------------------------------------------------------------ 20-7

20.1.5

Oscillation Stabilization Time at Power-On --------------------------------------------------------------- 20-11

20.2 Clock Generator Circuit ------------------------------------------------------------------------------------------------- 20-12

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