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MESC TOOL NEWS:
MESCT-M16C/62POD-000416D
Precautions Concerning to Emulation Pods
for M16C/62, 6H, and 6N Groups
and Compact Emulator for M16C/62 Group MCUs
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Please take note of the following problem in using pullup control registers of the emulation pods for the M16C/62, 6H, and 6N groups and the compact emulator for the M16C/62 group MCUs.
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Products Concerned
| Product Type | Serial Numbers |
| M30620T-RPD-E | All the serial numbers
(includingremodeled products for M16C/62A) |
| M30620TB-RPD-E | All the serial numbers
(including remodeled products for M16C/62A) |
| M30620T2-RPD-E | All the serial numbers |
| M30600T-RPD-E | Remodeled products for M16C/62 only |
| M30610T-RPD-E | Remodeled products for M16C/62 only |
Emulation Pod for
M16C/6H Group MCUs
(Specific Product) | All the serial numbers |
Emulation Pod for
M16C/6N Group MCUs
(Specific Product) | All the serial numbers |
M30620T-CPE
(Compact Emulator for M16C/62 Group MCUs) | All the serial numbers |
- Note:The following products are not concerned in this problem:
- * M30600T-RPD-E (not remodeled for M16C/62 group MCUs)
- * M30610T-RPD-E (not remodeled for M16C/62 group MCUs)
- * Emulation pod for M16C/6K group MCUs
- * Emulation pod for M16C/6V group MCUs
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Problem
When pull-up control register 1 for port pins P44--P47 (bit 1 of address 3FDh: PU11) is set to "1" (pulled up), port pins P15--P17 are also pulled up regardless of the setting of pull-up control register 0 for port pins P14--P17 (bit 3 of address 3FCh: PU03).
However, this problem arises only in the emulation pods and compact emulator listed above and does not arise in actual MCUs.
| Status of PU03 | Status of PU11 | Port Pins P15--P17 |
| 0 | 0 | Not pulled up |
| 1 | 0 | Pulled up |
| 0 | 1 | Pulled up (*1) |
| 1 | 1 | Pulled up |
*1: Not pulled up in actual MCUs.
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Cause
Please be aware that this problem is inherent to the specifications in the emulate mode of MCUs. Therefore, when using pull-up control register 1 for port pins P44--P47 (bit 1 of address 3FDh: PU11), it should be noted that different operations can be observed from those in actual MCUs.
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