r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 597

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
25.1
Figure 25.2
link controller
Event input
Figure 25.2 shows a Block Diagram of Sensor Control Unit.
As shown in Figure 25.2, the sensor control unit consists of the status control, the secondary counter, and the
primary counter.
The unit controls the ports and the counters to detect the floating capacitance of the capacitive touch electrode.
The operating clock for the sensor control unit is f1, f2 or f4, which selected as the count source. The count source
is supplied to each counter.
The sensor control unit has the following two operating modes:
• Single mode: Touches on a channel are detected.
• Scan mode: Touches on any multiple channels are detected.
from event
(ELC)
Overview
f1
f2
f4
Preliminary document
Specifications in this document are tentative and subject to change.
Count source
Block Diagram of Sensor Control Unit
control block
control block
Trigger
control
Status
Primary counter
Channel control
Timing variable
Measurement
DTC request
Data buffer
Secondary
Interrupt
counter
counter
counter
block
control block
Sampling
Channel
Sensor control unit
control
Pin
Pin control
signal
Pin control
signal
ACK signal/transfer
CMOS input to CHxA1 pin
CMOS input to CHxA0 pin
complete signal
Request signal
Request signal
25. Sensor Control Unit
control
Port
Page 566 of 725
control block
control unit
Detection
Interrupt
DTC
Sensor
pin
pin