ST92F150-EVAL STMicroelectronics, ST92F150-EVAL Datasheet - Page 18

• Manufacturer Part Number: ST92F150-EVAL
• Description: BOARD EVALUATION FOR ST9 SERIES
• Manufacturer: STMicroelectronics

Specifications of ST92F150-EVAL

• Processor To Be Evaluated: ST90158 and ST92F1x Daughter Board
• Interface Type: I2C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-2905

EVALUATION BOARD GETTING STARTED
3 TROUBLESHOOTING
3.1 CONTINUOUS RESET
The following symptoms may be caused by the MCU being continuously reset:
– The emulator does not stop by itself after a “step” command,
– If the program is stopped using the “STOP” command, and the program counter is set to the
In these cases, make sure that the jumper on pin TP5 is properly in place.
If a specific function cannot be obtained while the program is being executed, check whether
the hardware watchdog is selected. If the hardware watchdog is selected, the microcontroller
will be cyclically reset.
3.2 MEMORY MALFUNCTION
1/ Make sure that the correct voltage supply (V
following table.
Table 1. Memory Voltage Supplies
2/ With some NVRAM lots, the memory cannot be accessed with the external memory access
mode used on the Motherboard (MC=0, refer to the product datasheet). This mode is not com-
patible with all memory types as the DS signal is pulled down by the microcontroller during a
WRITE Operation. In this case, the U1 component (74HC04) must be removed, and pins 3
and 4 must be connected together. Then the memory can be accessed using MC=1 mode (re-
fer to the product datasheet). In this mode the OEN signal is pulled down only during the
READ operation.
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value that indicates the software start address.
Memory Set
M29W040B
M27C1001
M29F040B
M48Z128Y
M48Z128V
M27V101
CC
) is provided to the memories. Refer to the
Voltage Supply (V
2.7 to 3.6 V
2.8 to 4.6 V
5 V ± 10%
3 to 3.6 V
CC
)