QB-78K0MINI 78K0 Series On-Chip Debugging Emulator Usage
Contents
1. The debugger takes a measure to avoid this problem by forcibly switching to the main clock when a break occurs and re switches to the subclock or Ring OSC when the program is executed Consequently the QB 78KOMINI always operates on the main clock during a break lt 2 gt A fail safe break Uninitialize Stack Pointer a break that occurs due to a failure to perform stack pointer initialization occurs when an internal reset is generated due to a bug in the microcontroller mounted on the self check board Workaround Stop the watchdog timer operation or repeat starting the count operation to suppress generation of the internal reset by the watchdog timer ZBG CD 04 0068 Attachment 4 4 Note The part number is shown as QB 78KOKX1H TB_ X X on the label attached to the device mounted on the self check board X X indicates the version 6 Cautions General cautions on handling this product 1 Circumstances not covered by product guarantee If the product was disassembled altered or repaired by the customer If it was dropped broken or given another strong shock e Use at overvoltage use outside guaranteed temperature range storing outside guaranteed temperature range If power was turned on while the USB cable or target system connection was in an unsatisfactory state If the USB cable connection cable or the like was bent or pulled excessively If an AC adapter other than the one supplied with the produ2. Microcomputer Technical Information Document No ZBG CD 04 0068 QB 78KOMINI Date issued September 24 2004 78KO Series On Chip Debugging Emulator Issued by Development Tool Group Multipurpose Microcomputer Systems Division Usage Restrictions 3rd Systems Operations Unit NEC Electronics Corporation Related QB 78KOMINI User s Manual Notification V Usage restriction documents U17029EJ2VO classification Upgrade Document modification Other notification 1 Affected product QB 78KOMINI Control code A B C 2 New restriction Restriction No 1 has been added See the attachment for details 3 Workaround See the attachment for details 4 Modification schedule Products in which restriction No 1 is modified are scheduled for release as follows Newly shipped products From the shipment of July 2004 control code C Upgrade for already shipped products Available from October 2004 Note that this schedule is subject to change without notice For the detailed release schedule of the modified products contact an NEC Electronics sales representative 5 List of restrictions See the attachment for details 6 Document revision history QB 78KOMINI 78KO Series On Chip Debugging Emulator Usage Restrictions ZBG CD 04 0068 September 24 2004 Addition of bug No 1 Note The control code is the second digit from the left in the 10 digit serial number in the war
3. ct is used If the product got wet If the product and target system were connected while a potential difference existed between the GND of the product and the GND of the target system If a connector or cable was removed while the power was being supplied to the product If an excessive load was placed on a connector or socket 2 Safety precautions If used for a long time the product may become hot 50 C to 60 C Be careful of low temperature burns and other dangers due to the product becoming hot e Be careful of electrical shock There is a danger of electrical shock if the product is used as described above in 1 Circumstances not covered by product guarantee
4. e target device is erased if the QB 78KOMINI is connected to a PC via a USB and the power to the target is turned on when the value at address 0x84 is 0x03 and the ID code is other than OxFF Workaround Set the value at address 0x84 to 0x02 This bug has been corrected in control code B or later ZBG CD 04 0068 Attachment 2 4 4 Caution The underlined description has been added to Caution in 3 1 2 Clock socket for target device in the user s manual Caution Be sure to turn off the emulator s power supply before inserting or removing a clock in the clock socket for the target device In addition do not mount a clock in the clock socket when System is selected in the Main Clock field in the Configuration dialog box of the debugger 5 Difference Manual This section explains modifications and additions to the user s manual U17029EJ2VOUMO0 Throughout Incorrect RESET Correct RESET Incorrect RESET OUT Correct RESET OUT ePages 11 to 13 30 38 and 40 e The OCD Checker is bundled with the CD ROM supplied with the QB 78KOMINI ePages 25 and 26 Incorrect For description of pull down resistance values see the target device s User s Manual Correct Connect a pull down resistor of 470 Q or higher Pages 42 and 43 Replace the contents of CHAPTER 5 RESTRICTIONS with the following 1 A delay period of about 50 ws from cancellation of a target reset RESET_IN to cancellation of a
5. ranty supplied with the product you purchased if it has not been upgraded If the product has been upgraded a label indicating the new version is attached to the product and the x in V UP x on this label indicates the control code Control codes B and C are functionally equivalent ZBG CD 04 0068 Attachment 1 4 Notes on Using QB 78KOMINI This document is revised from the document QB 78KOMINI Control Code A B Operating Precautions document number SUD DT 04 0157 included in the CD ROM ID78K0 QB Disk V2 81 2004 6 22 so refer to this latest document 1 Product Version Control Code Remark A B C Note The control code is the second digit from the left in the 10 digit serial number in the warranty supplied with the product you purchased if it has not been upgraded If the product has been upgraded a label indicating the new version is attached to the product and the x in V UP x on this label indicates the control code Control codes B and C are functionally equivalent 2 Product History n i Control Code No Bugs and Changes Additions to Specifications A B C The flash data in the target device is erased before the debugger is started x Applicable V Not applicable or already corrected 3 Details of Bugs and Added Specifications No 1 The flash data in the target device is erased before the debugger is started Description The flash data in th
6. target device reset RESET OUT the period from when the target reset RESET_IN becomes low to when the target device reset RESET_OUT becomes high is required for mode setting See Figure 5 1 below 2 A delay period of about 25 ws is required from input of a target reset RESET_IN to when the target device is reset RESET_OUT See Figure 5 1 below ZBG CD 04 0068 Attachment 3 4 Figure 5 1 Timing of Target Reset 50 us i e a RESET _IN l i When shorter tanso a i 1 1 15 us 6 RESET_OUT m a e 1 i RESET_IN i When longer than 50 ws i RESET _OUT ee e When setting on chip debugging mode via the normal port without using pins X1 and X2 two of the user ports will be unavailable for use When the user program is downloaded flash memory programming is performed by self writing At that time be sure to use a clock that supports the self programming routine s operating frequency range A high level signal is always output from to the FLMDO pin during emulation Be sure to connect a pull down resistor to the FLMDO pin and manipulate this pin based on high high impedance levels rather than on high low levels when using ports for manipulation Restriction on using the self check board V1 0 for operation check lt 1 gt There is a communication problem due to a bug in the microcontroller mounted on the self check board when the QB 78KOMINI operates on the subclock or Ring OSC
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