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MCU
Fig 6-5 Conceptual Connection MCU, EEPROM and TC32306FTG
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In advance, write registers' values to each configuration data area of EEPROM.
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MCU commands this IC for selecting configuration data area of EEPROM. (1)
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This IC read a configuration data from EEPROM by SPI lines at the rising edge of RESET pin
signal. (2)
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This IC is operated depending on EEPROM data. (3)
6.3 Universal Functions and Settings
6.3.1
Reset Status
The internal condition (such as the register value) of TC32306FTG is initialized in this Status. For this
IC Reset, input "L" signal to RESET pin surely during stable voltage supply. Also releasing Reset of
this IC should be operated during stable voltage supply.
RESET Pin
* In EEPROM Mode, ENB pin / TX_SW pin / RX_SW pin are available.
Notice:
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Must be reset after voltage supply.
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The value of registers is initialized immediately after reset is released.
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See Table 5-2 of I/O behavior at the register initialized.
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In SPI Mode, TC32306FTG stays Battery Saving from Reset to register setting input, which
moves to Run after reset will be released.
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In EEPROM Mode, the internal oscillator circuit for reading EEPROM will start after reset is
released.
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Controlling to RESET pin in starting operation of this IC, keep reset status till supply voltage is
over 90% of system voltage stably. Wait at least 1 microsecond after reaching that voltage level.
Then reset can be released. In the transient starting operation, reset release may cause to be
unexpected operation of this IC.
About RESET pin control in starting operation, see Fig 6-6.
(1)
TX_SW
RX_SW
TC32306FTG
ENB
RESET
Table 6-4 RESET Pin Control
Initialize registers and I/O behaviors. Because I/O will be
initialized, TC32306FTG does not accept all the settings except
L
some settings. *
About I/O behaviors at Reset status, see Table 5-2.
H
Battery Saving / Standby / Run by this IC settings.
(2)
MOSI
MISO
CLK
CS
(3)
IC Status
14
TC32306FTG
EEPROM
2015-10-01
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