Users Manual
Table Of Contents
- 45. 12-Bit D/A Converter (R12DAA)
- 46. Temperature Sensor (TEMPSA)
- 47. Comparator B (CMPBa)
- 47.1 Overview
- 47.2 Register Descriptions
- 47.2.1 Comparator B1 Control Register 1 (CPB1CNT1)
- 47.2.2 Comparator B1 Control Register 2 (CPB1CNT2)
- 47.2.3 Comparator B1 Flag Register (CPB1FLG)
- 47.2.4 Comparator B1 Interrupt Control Register (CPB1INT)
- 47.2.5 Comparator B1 Filter Select Register (CPB1F)
- 47.2.6 Comparator B1 Mode Select Register (CPB1MD)
- 47.2.7 Comparator B1 Reference Input Voltage Select Register (CPB1REF)
- 47.2.8 Comparator B1 Output Control Register (CPB1OCR)
- 47.3 Operation
- 47.4 Comparator B2 and Comparator B3 Interrupts
- 47.5 Usage Note
- 48. Data Operation Circuit (DOC)
- 49. RAM
- 50. Flash Memory (FLASH)
- 50.1 Overview
- 50.2 ROM Area and Block Configuration
- 50.3 E2 DataFlash Area and Block Configuration
- 50.4 Register Descriptions
- 50.4.1 E2 DataFlash Control Register (DFLCTL)
- 50.4.2 Flash P/E Mode Entry Register (FENTRYR)
- 50.4.3 Protection Unlock Register (FPR)
- 50.4.4 Protection Unlock Status Register (FPSR)
- 50.4.5 Flash P/E Mode Control Register (FPMCR)
- 50.4.6 Flash Initial Setting Register (FISR)
- 50.4.7 Flash Reset Register (FRESETR)
- 50.4.8 Flash Area Select Register (FASR)
- 50.4.9 Flash Control Register (FCR)
- 50.4.10 Flash Extra Area Control Register (FEXCR)
- 50.4.11 Flash Processing Start Address Register H (FSARH)
- 50.4.12 Flash Processing Start Address Register L (FSARL)
- 50.4.13 Flash Processing End Address Register H (FEARH)
- 50.4.14 Flash Processing End Address Register L (FEARL)
- 50.4.15 Flash Write Buffer Register n (FWBn) (n = 0 to 3)
- 50.4.16 Flash Status Register 0 (FSTATR0)
- 50.4.17 Flash Status Register 1 (FSTATR1)
- 50.4.18 Flash Error Address Monitor Register H (FEAMH)
- 50.4.19 Flash Error Address Monitor Register L (FEAML)
- 50.4.20 Flash Start-Up Setting Monitor Register (FSCMR)
- 50.4.21 Flash Access Window Start Address Monitor Register (FAWSMR)
- 50.4.22 Flash Access Window End Address Monitor Register (FAWEMR)
- 50.4.23 Unique ID Register n (UIDRn) (n = 0 to 3)
- 50.5 Start-Up Program Protection
- 50.6 Area Protection
- 50.7 Programming and Erasure
- 50.8 Boot Mode
- 50.9 Flash Memory Protection
- 50.10 Communication Protocol
- 50.10.1 State Transition in Boot Mode (SCI Interface)
- 50.10.2 Command and Response Configuration
- 50.10.3 Response to Undefined Commands
- 50.10.4 Boot Mode Status Inquiry
- 50.10.5 Inquiry Commands
- 50.10.6 Setting Commands
- 50.10.7 ID Code Authentication Command
- 50.10.8 Program/Erase Commands
- 50.10.9 Read-Check Commands
- 50.11 Serial Programmer Operation in Boot Mode (SCI Interface)
- 50.11.1 Bit Rate Automatic Adjustment Procedure
- 50.11.2 Procedure to Receive the MCU Information
- 50.11.3 Procedure to Select the Device and Change the Bit Rate
- 50.11.4 Procedure for Transition to the Program/Erase Host Command Wait State
- 50.11.5 Procedure to Unlock Boot Mode ID Code Protection
- 50.11.6 Procedure to Erase the User Area and Data Area
- 50.11.7 Procedure to Program the User Area and Data Area
- 50.11.8 Procedure to Check Data in the User Area
- 50.11.9 Procedure to Check Data in the Data Area
- 50.11.10 Procedure to Set the Access Window in the User Area
- 50.12 Rewriting by Self-Programming
- 50.13 Usage Notes
- 50.14 Usage Notes in Boot Mode
- 51. Electrical Characteristics
- 51.1 Absolute Maximum Ratings
- 51.2 DC Characteristics
- 51.3 AC Characteristics
- 51.3.1 Clock Timing
- 51.3.2 Reset Timing
- 51.3.3 Timing of Recovery from Low Power Consumption Modes
- 51.3.4 Control Signal Timing
- 51.3.5 Timing of On-Chip Peripheral Modules
- 51.3.5.1 Timing of I/O Ports
- 51.3.5.2 Timing of MTU/TPU
- 51.3.5.3 Timing of POE
- 51.3.5.4 Timing of TMR
- 51.3.5.5 Timing of SCI
- 51.3.5.6 Timing of RIIC
- 51.3.5.7 Timing of RSPI
- 51.3.5.8 Timing of SSI
- 51.3.5.9 Timing of SDHI
- 51.3.5.10 Timing of A/D Converter Trigger
- 51.3.5.11 Timing of CAC
- 51.3.5.12 Timing of CLKOUT
- 51.3.5.13 Timing of CLKOUT_RF
- 51.4 USB Characteristics
- 51.5 A/D Conversion Characteristics
- 51.6 D/A Conversion Characteristics
- 51.7 Temperature Sensor Characteristics
- 51.8 Comparator Characteristics
- 51.9 CTSU Characteristics
- 51.10 Characteristics of Power-On Reset Circuit and Voltage Detection Circuit
- 51.11 Oscillation Stop Detection Timing
- 51.12 Battery Backup Function Characteristics
- 51.13 ROM (Flash Memory for Code Storage) Characteristics
- 51.14 E2 DataFlash Characteristics (Flash Memory for Data Storage)
- 51.15 BLE Characteristics
- 51.16 Usage Notes
- Appendix 1. Port States in Each Processing Mode
- Appendix 2. Package Dimensions
- REVISION HISTORY
- Colophon
- Address List
- Back cover
R01UH0823EJ0110 Rev.1.10 Page 1742 of 1852
Nov 30, 2020
RX23W Group 50. Flash Memory (FLASH)
50.10.9 Read-Check Commands
Read-check commands are used to read data or check whether data is programmed in the user area or data area in the
MCU based on the response to inquiry commands.
Table 50.22 lists read-check commands used in the program/erase host command wait state.
50.10.9.1 Memory Read
This command is used to read data programmed in the user area or data area. For a read start address selected in the
command, set a value within the range from the area start address to the area end address received in the response to the
user area information inquiry command or the data area information inquiry command.
For a read size selected in the command, set a value so the sum of the read start address and the read size is within the
range from the area start address to the area end address in the response to the user area information inquiry command or
the data area information inquiry command.
When the MCU performs a read successfully, it sends data of the specified range. If the SUM of the received command
does not match or the MCU fails to perform a read successfully, it sends an error response.
Size (1 byte): Total bytes for Read start address and Read size
Area (1 byte): Area that is read
01h: User area or data area
Read start address (4 bytes): Start address of the area that is read
Read size (4 bytes): Size of data that is read (in bytes)
SUM (1 byte): Value that is calculated so the sum of response data is 00h
Table 50.22 Read-Check Commands
Command Function
Memory read Read data from the user area or data area.
User area checksum Obtain the checksum of the entire user area.
Data area checksum Obtain the checksum of the entire data area.
User area blank check Check whether data is programmed in the user area.
Data area blank check Check whether data is programmed in the data area.
Access window information program Set the access window.
Access window read Read the settings of the access window.
Command 52h Size Area
Read start address
Read size
SUM