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Chapter 2
Pin Functions
User’s Manual U16580EE3V1UD00
(20) DCK (Debug clock) … Input
This pin inputs a debug clock. At the rising edge of the DCK signal, the DMS and DDI signals are
sampled, and data is output from the DDO pin at the falling edge of the DCK signal. Keep this pin
high when the debug function is not used.
(21) DDI (Debug data input) … Input
This pin inputs debug data, which is sampled at the rising edge of the DCK signal when the debug
serial interface is in the shift state. Data is input with the LSB first. Keep this pin high when the
debug function is not used.
(22) DDO (Debug data output) … Output
This pin outputs debug data at the falling edge of the DCK signal when the debug serial interface
is in the shift state. Data is output with the LSB first.
(23) DMS (Debug mode select) … Input
This input pin selects a debug mode. Depending on the level of the DMS signal, the state machine
of the debug serial interface changes. This pin is sampled at the rising edge of the DCK signal.
Keep this pin high when the debug function is not used.
(24) DRST (Debug reset) … Input
This pin inputs a debug reset signal that is a negative-logic signal to initialize the DCU
asynchronously.
When this signal goes low, the DCU is reset/invalidated. Keep this pin low when the debug
function is not used.
(25) MODE0 to MODE2 (Mode) … Input
These are input pins used to specify the operating mode.
(26) FLMD0, FLMD1 (flash programming mode)
These are input pins used to specify the flash programming mode.
(27) RESET (Reset) … Input
RESET is a signal that is input asynchronously and that has a constant low level width regardless
of the operating clock’s status. When this signal is input, a system reset is executed as the first
priority ahead of all other operations.
In addition to being used for ordinary initialization/start operations, this pin can also be used to
release a standby mode (HALT).
(28) X1, X2 (Crystal)
These pins are used to connect the resonator that generates the system clock.
(29) ANI00 to ANI09, ANI10 to ANI19 (Analog input) … Input
These are analog input pins of the corresponding A/D converter (ADC0, ADC1).
(30) AV
REF0
, AV
REF1
(Analog reference voltage) … Input
These are reference voltage supply pins for the corresponding A/D converter (ADC0, ADC1).
(31) AV
DD
(Analog power supply)
This is the positive power supply pin for the A/D converters.
Содержание V850E/PH2
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