RL78/D1A User's Manual: Hardware - Renesas

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Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 29 ON-CHIP DEBUG FUNCTION CHAPTER 29 ON-CHIP DEBUG FUNCTION 29.1 Connecting E1 On-chip Debugging Emulator to RL78/D1A The RL78/D1A uses the VDD, RESET, TOOL0, and VSS pins to communicate with the host machine via an E1 on-chip debugging emulator. Serial communication is performed by using a single-line UART that uses the TOOL0 pin. Caution The RL78/D1A has an on-chip debug function, which is provided for development and evaluation. Do not use the on-chip debug function in products designated for mass production, because the guaranteed number of rewritable times of the flash memory may be exceeded when this function is used, and product reliability therefore cannot be guaranteed. Renesas Electronics is not liable for problems occurring when the on-chip debug function is used. Figure 29-1. Connection Example of E1 On-chip Debugging Emulator and RL78/D1A E1 target connector VDD EMVDD EVDD GND SMVDD SMVDD GND GND GND TOOL0 Note 1 R01UH0317EJ0004 Rev. 0.04 1183 Feb. 22, 2013 Note 2 VDD TOOL0 RESET RESET RESET TRESET VDD EVDD EVDD VDD 1 kΩ 10 kΩ 1 kΩ VDD EVDD RL78/D1A Reset circuit Reset signal Notes 1. Connecting the dotted line is not necessary during flash programming. 2. If the reset circuit on the target system does not have a buffer and generates a reset signal only with resistors and capacitors, this pull-up resistor is not necessary. Caution This circuit diagram is assumed that the reset signal outputs from an N-ch O.D. buffer (output resistor: 100 or less)
Under development Preliminary document Specifications in this document are tentative and subject to change. RL78/D1A CHAPTER 29 ON-CHIP DEBUG FUNCTION 29.2 On-Chip Debug Security ID The RL78/D1A has an on-chip debug operation control bit in the flash memory at 000C3H (see CHAPTER 27 OPTION BYTE) and an on-chip debug security ID setting area at 000C4H to 000CDH, to prevent third parties from reading memory content. When the boot swap function is used, also set a value that is the same as that of 020C3H and 020C4H to 020CDH in advance, because 000C3H, 000C4H to 000CDH and 020C3H, and 020C4H to 020CDH are switched. Table 29-1. On-Chip Debug Security ID Address On-Chip Debug Security ID 000C4H to 000CDH 020C4H to 020CDH 29.3 Securing of User Resources Any ID code of 10 bytes To perform communication between the RL78/D1A and E1 on-chip debugging emulator, as well as each debug function, the securing of memory space must be done beforehand. If Renesas Electronics assembler or compiler is used, the items can be set by using linker options. (1) Securement of memory space The shaded portions in Figure 29-2 are the areas reserved for placing the debug monitor program, so user programs or data cannot be allocated in these spaces. When using the on-chip debug function, these spaces must be secured so as not to be used by the user program. Moreover, this area must not be rewritten by the user program. R01UH0317EJ0004 Rev. 0.04 1184 Feb. 22, 2013
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User’s Manual 16 RL78/D1A 16-Bit
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NOTES FOR CMOS DEVICES (1) VOLTAGE
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Conventions Data significance: High
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CONTENTS CHAPTER 1 OUTLINE.........
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3.4.4 Short direct addressing .....
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6.8 Operation of Plural Channels of
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RL78/D1A User’s Manual: Hardware
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RL78/D1A User's Manual: Hardware - Renesas

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