Renesas M32R/ECU Series

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16.1 Outline of the Wait Controller ----------------------------------------------------------------------------------------- 16-2
16.2 Wait Controller Related Registers ----------------------------------------------------------------------------------- 16-4
16.2.1 CS Area Wait Control Registers ----------------------------------------------------------------------------16-4
16.3 Typical Operation of the Wait Controller --------------------------------------------------------------------------- 16-6
CHAPTER 17 RAM BACKUP MODE
17.1 Outline of RAM Backup Mode ----------------------------------------------------------------------------------------17-2
17.2 Example of RAM Backup when Power is Down -----------------------------------------------------------------------17-3
17.2.1 Normal Operating State---------------------------------------------------------------------------------------17-3
17.2.2 RAM Backup State --------------------------------------------------------------------------------------------- 17-4
17.3 Example of RAM Backup for Saving Power Consumption ---------------------------------------------------- 17-5
17.3.1 Normal Operating State---------------------------------------------------------------------------------------17-5
17.3.2 RAM Backup State --------------------------------------------------------------------------------------------- 17-6
17.3.3 Precautions to Be Observed at Power-On ---------------------------------------------------------------17-7
17.4 Exiting RAM Backup Mode (Wakeup) ------------------------------------------------------------------------------17-8
CHAPTER 18 OSCILLATOR CIRCUIT
18.1 Oscillator Circuit----------------------------------------------------------------------------------------------------------18-2
18.1.1 Example of an Oscillator Circuit ----------------------------------------------------------------------------18-2
18.1.2 XIN Oscillation Stoppage Detection Circuit --------------------------------------------------------------18-3
18.1.3 Oscillation Drive Capability Select Function -------------------------------------------------------------18-5
18.1.4 System Clock Output Function------------------------------------------------------------------------------18-7
18.1.5 Oscillation Stabilization Time at Power-On --------------------------------------------------------------18-7
18.2 Clock Generator Circuit ------------------------------------------------------------------------------------------------18-8
CHAPTER 19 JTAG
19.1 Outline of JTAG ----------------------------------------------------------------------------------------------------------19-2
19.2 Configuration of the JTAG Circuit------------------------------------------------------------------------------------19-3
19.3 JTAG Registers ----------------------------------------------------------------------------------------------------------19-4
19.3.1 Instruction Register (JTAGIR)-------------------------------------------------------------------------------19-4
19.3.2 Data Register ----------------------------------------------------------------------------------------------------19-5
19.4 Basic Operation of JTAG ----------------------------------------------------------------------------------------------19-6
19.4.1 Outline of JTAG Operation ----------------------------------------------------------------------------------- 19-6
19.4.2 IR Path Sequence ----------------------------------------------------------------------------------------------19-8
19.4.3 DR Path Sequence --------------------------------------------------------------------------------------------19-9
19.4.4 Inspecting and Setting Data Registers --------------------------------------------------------------------19-10
19.5 Boundary Scan Description Language ----------------------------------------------------------------------------- 19-11
19.6 Notes on Board Design when Connecting JTAG ----------------------------------------------------------------------19-12
19.7 Processing Pins when Not Using JTAG----------------------------------------------------------------------------19-14
CHAPTER 20 POWER SUPPLY CIRCUIT
20.1 Configuration of the Power Supply Circuit -------------------------------------------------------------------------20-2
20.2 Power-On Sequence ----------------------------------------------------------------------------------------------------20-3
20.2.1 Power-On Sequence when Not Using RAM Backup --------------------------------------------------20-3
20.2.2 Power-On Sequence when Using RAM Backup--------------------------------------------------------20-4
20.3 Power-Off Sequence ----------------------------------------------------------------------------------------------------20-5
20.3.1 Power-Off Sequence when Not Using RAM Backup --------------------------------------------------20-5
20.3.2 Power-Off Sequence when Using RAM Backup -------------------------------------------------------20-6