R4F24278NVFQU Renesas Electronics America, R4F24278NVFQU Datasheet - Page 1263
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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R4F24278NVFQU
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REALTEK
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H8S/2427, H8S/2427R, H8S/2425 Group
26.2.4
(1)
When the STBY pin is driven low, a transition is made to hardware standby mode from any mode.
In hardware standby mode, all functions enter the reset state and stop operation, resulting in a
significant reduction in power dissipation. As long as the prescribed voltage is supplied, on-chip
RAM data is retained. I/O ports are set to the high-impedance state.
In order to retain on-chip RAM data, the RAME bit in SYSCR should be cleared to 0 before
driving the STBY pin low. Do not change the state of the mode pins (MD2 to MD0) while this
LSI is in hardware standby mode.
(2)
Hardware standby mode is cleared by means of the STBY pin and the RES pin. When the STBY
pin is driven high while the RES pin is low, the reset state is set and clock oscillation is started.
Ensure that the RES pin is held low until the clock oscillator stabilizes (for details on the
oscillation stabilization time, see table 26.2). When the RES pin is subsequently driven high, a
transition is made to the program execution state via the reset exception handling state.
(3)
Figure 26.3 shows an example of hardware standby mode timing.
When the STBY pin is driven low after the RES pin has been driven low, a transition is made to
hardware standby mode. Hardware standby mode is cleared by driving the STBY pin high,
waiting for the oscillation stabilization time, then changing the RES pin from low to high.
REJ09B0565-0100 Rev. 1.00
Jul 22, 2010
Oscillator
RES
STBY
Transition to Hardware Standby Mode
Clearing Hardware Standby Mode
Hardware Standby Mode Timing
Hardware Standby Mode
Figure 26.3 Hardware Standby Mode Timing
Oscillation
stabilization
time
Section 26 Power-Down Modes
Reset
exception
handling
Page 1233 of 1448
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