R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 829
R4F24278NVFQU
Manufacturer Part Number
R4F24278NVFQU
Description
MCU 512K/48K 2.7-5.5V 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24278NVFQU.pdf
(1482 pages)
Specifications of R4F24278NVFQU
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, Smart Card, SPI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
98
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Eeprom Size
-
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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H8S/2427, H8S/2427R, H8S/2425 Group
12.4.4
In cascaded operation, two 16-bit counters for different channels are used together as a 32-bit
counter.
This function works by counting the channel 1 (channel 4, channel 7, or channel 10) counter clock
at overflow/underflow of TCNT_2 (TCNT_5, TCNT_8, or TCNT_11) as set in bits TPSC2 to
TPSC0 in TCR.
Underflow occurs only when the lower 16-bit TCNT is in phase-counting mode.
Table 12.30 shows the register combinations used in cascaded operation.
Note: When phase counting mode is set for channel 1, 4, 7, or 10, the counter clock setting is
Table 12.30 Cascaded Combinations
(1)
Figure 12.18 shows an example of the setting procedure for cascaded operation.
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
Combination
Channels 1 and 2
Channels 4 and 5
Channels 7 and 8
Channels 10 and 11
Example of Cascaded Operation Setting Procedure
invalid and the counter operates independently in phase counting mode.
Cascaded Operation
<Cascaded operation>
Cascaded operation
Figure 12.18 Cascaded Operation Setting Procedure
Set cascading
Start count
Upper 16 Bits
TCNT_1
TCNT_4
TCNT_7
TCNT_10
[1]
[2]
[1]
[2]
Set bits TPSC2 to TPSC0 in the channel 1
(channel 4) TCR to B'1111 to select TCNT_2
(TCNT_5) overflow/underflow counting.
Set the CST bit in TSTR for the upper and lower
channel to 1 to start the count operation.
Lower 16 Bits
TCNT_2
TCNT_5
TCNT_8
TCNT_11
Section 12 16-Bit Timer Pulse Unit (TPU)
Page 799 of 1448
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