Descriptions changed in M16C/5M Group,M16C/57 Group User`s
Contents
1. Date Oct 14 2011 RENESAS TECHNICAL UPDATE 1753 Shimonumabe Nakahara ku Kawasaki shi Kanagawa 211 8668 Japan Renesas Electronics Corporation Product Document Category MPU amp MCU No TN 16C A204A E Rev 1 00 Descriptions changed in M16C 5M Group Information me Title M16C 57 Group User s Manual Category TeehnicelNotiniceron Lot No Applicable Reference Product M16C 5M and M16C57 Groups Document Some specifications of the M16C 5M and M16C57 Groups have been changed MCU usage and setting procedures have also been added or changed Indicates the titles in the M16C 5M Group M16C 57 Group User s Manual Hardware Rev 1 10 1 Specification Changes 1 1 G1BT Register in Timer S 18 2 5 Base Timer Register G1BT Do not write to this register The G1BT register becomes 0000h when the BTS bit in the G1BCR1 register is set to 0 base timer reset This function works same as before without any change 2 Changes on Usage Note 2 1 Interrupt Request When Selecting Time Measurement Function 18 5 6 Interrupt Request When Selecting Time Measurement Function When the FSCj bit j 0 to 7 in the G1FS register is set to 1 time measurement function selected and the IFEj bit in the G1FE register is also set to 1 the G1IRj bit in the G1IR register or the IR bit in the ICOCIIC register i 0 1 or ICOCHjIC register j 0 to 3 may become 1 interrupt requested after a maximum o2. ebugging emulator or full spec emulator e While using user boot mode do not change the input level of the pin used for user boot entry However if there is a possibility that the input level may change perform the necessary processes in user boot mode then restart the MCU in single chip mode before the input level changes To use user boot mode after standard serial I O mode turn off the power when exiting standard serial I O mode and then turn on the power again cold start The MCU enters user boot mode under the right conditions 4 Additions and Changes on Electrical Characteristics 4 1 Oscillator 31 1 8 Oscillator Electrical Characteristics 31 4 8 Oscillator Electrical Characteristics The characteristic of the dedicated 125 kHz on chip oscillator for the watchdog timer has been added Standard Typ Characteristic Dedicated 125 kHz on chip oscillator for the watchdog timer oscillation 125 4 2 Serial Bus Interface 31 2 2 9 Serial Bus Interface 31 3 2 9 Serial Bus Interface 31 5 2 9 Serial Bus Interface 31 6 2 9 Serial Bus Interface The characteristic of tyssck ssio Now shows the Master and Slave standards independently Measurement Standard condition Typ Master 1 teyc tassck ssio SSO SSI data output delay time Slave 80 ns Characteristic Note 1 1 teyc 1 f1 s RENESAS Page 2 of 2
3. f two fBT1 cycles When using the IC OC interrupt i or IC OC channel j interrupt set bits FSCj and IFEj to 1 then perform the following 1 Wait for two or more fBT1 cycles 2 Set the IR bit in the ICOCiIC register and or ICOCHjIC register to 0 3 Wait for three or more fBT1 cycles after the time measurement function is selected Set the G1IR register to OOh after the IR bit in the ICOCIIC register is set to 0 c 2011 Renesas Electronics Corporation All rights reserved RENESAS Page 1 of 2 RENESAS TECHNICAL UPDATE TN 16C A204A E Date Oct 14 2011 3 Additions and Changes on Usage and Setting Procedures 3 1 User Boot Mode Program in Flash Memory 29 11 4 1 User Boot Mode Program in Notes on Flash Memory Following notes have been added to the user boot mode description When using user boot mode make sure to allocate the program to be executed to program ROM 2 e The LVDAS bit in the OFS1 address and bits WOTRCS1 and WDTRCSO in the OFS2 address are disabled in boot mode When restarting the MCU in user boot mode after starting it in user boot mode RAM becomes undefined If addresses 13FF8h to 13FFBh are all 00h the MCU does not enter standard serial I O mode Therefore the programmer or on chip debugger cannot be connected As the reset sequence differs the time necessary for starting the program is longer than in single chip mode e Functions in user boot mode cannot be debugged by the on chip d
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