upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 39
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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Pin Functions
2.1.2 Terms
2.1.3 Noise elimination
In this section, the following terms are used:
• Pin
• Port group
• Port mode / Port
• Alternative mode
• Port type
The input signals at some pins are passing a filter to remove noise and
glitches. The microcontroller supports both analog and digital filters. The
analog filters are always applied to the input signals, whereas the digital filters
can be enabled/disabled by control registers.
See “Noise Elimination“ on page 93 for a detailed description.
Preliminary User’s Manual U17566EE1V2UM00
Denotes the physical pin. Every pin is uniquely denoted by its pin number.
A pin can be used in several modes. Depending on the selected mode, a pin
name is allocated to the pin.
Denotes a group of pins. The pins of a port group have a common set of port
mode control registers.
A pin in port mode works as a general purpose input/output pin. It is then
called “port”.
The corresponding name is Pnm. For example, P07 denotes port 7 of port
group 0. It is referenced as “port P07”.
In alternative mode, a pin can work in various non-general purpose input/
output functions, for example, as the input/output pin of on-chip peripherals.
The corresponding pin name depends on the selected function. For
example, pin INTP0 denotes the pin for one of the external interrupt inputs.
Note that for example P00 and INTP0 denote the same physical pin. The
different names indicate the function in which the pin is being operated.
A control circuit evaluates the settings of the configuration registers. There
are different types of control circuits, called “port types”.
Chapter 2
39
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