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MAEC TOOL NEWS:
MAECT-M37702T-RPD-E-010616D
Announcement Remodeling Emulation Pods
M37702T-RPD-E, M37736T-RPD-E,
and M37751T-RPD-E
for the 7700 Family MCUs
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This is to announce that we will remodel emulation pods M37702T-RPD-E, M37736T-RPD-E, and M37751T-RPD-E for the 7700 family MCUs.
- Products Concerned
| Product Types: | M37702T-RPD-E, M37736T-RPD-E, M37751T-RPD-E |
| Serial Numbers: | Those ending with any number |
| Product Type | Serial Number |
|---|
| M37702T-RPD-E |
8JE001 -- 8JE020 (manufactured in Oct. 1998)
9FE001 -- 9FE010 (manufactured in Jun. 1999)
9IE011 -- 9IE020 (manufactured in Sep. 1999)
0CE001 -- 0CE009 (manufactured in Mar. 2000)
0EE010 (manufactured in May 2000)
0HE011 -- 0HE020 (manufactured in Aug. 2000)
1CE005, 1CE006 (manufactured in Mar. 2001) |
| M37736T-RPD-E |
9CE001 -- 9CE015 (manufactured in Mar. 1999)
9DE016 -- 9DE020 (manufactured in Apr. 1999) |
| M37751T-RPD-E | 8IE001 -- 8IE020 (manufactured in Sep. 1998) |
- Problem
When the emulation memory within the pod is written by the target MCU, writes may be performed to different addresses from those specified. Note that, however, memory devices other than emulation memory (for example, internal RAM and internal SFR) can be properly written to.
The following table shows whether the problem arises or not in combination with emulators:
| Emulator | Description |
|---|
| PC4701HS | Problem Not Arise |
PC4701U, PC4701M, PC4701L,
PC4700H, PC4700L | Problem May Arise |
Examples:
------------------------------------------------------------------------
(1) Before writing to an external area (allocated to emulation memory)
0 1 2 3 4 5 6 7 8 9 A B C D E F
1000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
(2) An instruction is executed to write FFh into address 1000
(3) After writing
0 1 2 3 4 5 6 7 8 9 A B C D E F
1000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
1020 FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
(4) The data that would have been written to address 1000 was written
to address 1020.
------------------------------------------------------------------------
Note: Reproducibility of the problem varies with the operating conditions of pods and variations between semiconductor devices used in pods, including evaluation MCUs.
- Cause
This problem occurs when address hold time at write decreases depending on the operating voltage of the target MCU. The higher the operating voltage is, the more frequently the problem arises. On the other hand, the problem will not occur if the target MCU is operating at lower voltages.
When the pod is used in combination with PC4701HS, the system's specifications restrict the supply voltage to the MCU in the pod within 5 volts, and the problem does not occur.
However, if pods are used in combination with PC4701U, PC4701M, etc., it is probable that this problem occurs because the Vcc voltages supplied by these emulators are rather higher than the one supplied by PC4701HS.
- Schedule of Fixing the Problem
If you are using the pod concerned in combination with any emulator other than PC4701HS, we will remodel yours free of charge.
So, please fill in "M37702T-RPD-E/M37736T-RPD-E/M37751T-RPD-E Remodeling Application Form" and send your pod to us with the filled-in application form enclosed in it.
It will take 10 working days for remodeling. Also be aware that we will not be able to supply you with another pod for the remodeling period.
- Send To:
- Your local Renesas Technology sales office or distributor
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