tmp89fh42l TOSHIBA Semiconductor CORPORATION, tmp89fh42l Datasheet - Page 341

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tmp89fh42l

Manufacturer Part Number
tmp89fh42l
Description
8 Bit Microcontroller Tlcs-870/c1 Series
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet

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RA006
21.2.6
mode, are physically fixed after a reset is released. This is designed to prevent a penetration current from flowing
through unused ports (port inputs and functional peripheral inputs, which are also used as ports, are disabled).
To access the flash memory using the RAM loader mode and a method other than the UART, therefore, port
inputs must be set to "enable". To enable the SCLK0 port input, set SPCR<PIN1> to "1". To enable port inputs
other than RXD0, TXD0 and SCLK0 port inputs, set SPCR<PIN0> to "1".
In serial PROM mode, the input levels of all ports, except the ports RXD0 and TXD0 used in serial PROM
In MCU mode, the SPCR register does not function.
Port input control register (SPCR<PIN0, PIN1>)
Page 327
TMP89FH42L

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