R4F24268NVRFQV Renesas Electronics America, R4F24268NVRFQV Datasheet - Page 342
R4F24268NVRFQV
Manufacturer Part Number
R4F24268NVRFQV
Description
MCU 256KB FLASH 48K 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2400r
Datasheet
1.R4F24268NVZFQV.pdf
(1406 pages)
Specifications of R4F24268NVRFQV
Core Processor
H8S/2600
Core Size
16/32-Bit
Speed
33MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SSU, UART/USART
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 10x10b, 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
Eeprom Size
-
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Section 6 Bus Controller (BSC)
6.15
6.15.1
In this LSI, if the ACSE bit is set to 1 in MSTPCR, and then a SLEEP instruction is executed with
the setting for all peripheral module clocks to be stopped (MSTPCR = H'FFFF, EXMSTPCR =
H'FFFF) or for operation of the 8-bit timer module alone (MSTPCR = H'FFFE, EXMSTPCR =
H'FFFF), and a transition is made to the sleep state, the all-module-clocks-stopped mode is entered
in which the clock is also stopped for the bus controller and I/O ports. In this state, the external
bus release function is halted. To use the external bus release function in sleep mode, the ACSE
bit in MSTPCR must be cleared to 0. Conversely, if a SLEEP instruction to place the chip in all-
module-clocks-stopped mode is executed in the external bus released state, the transition to all-
module-clocks-stopped mode is deferred and performed until after the bus is recovered.
6.15.2
In this LSI, internal bus master operation does not stop even while the bus is released, as long as
the program is running in on-chip ROM, etc., and no external access occurs. If a SLEEP
instruction to place the chip in software standby mode is executed while the external bus is
released, the transition to software standby mode is deferred and performed after the bus is
recovered.
Also, since clock oscillation halts in software standby mode, if BREQ goes low in this mode,
indicating an external bus release request, the request cannot be answered until the chip has
recovered from the software standby state.
6.15.3
CBR refreshing*
the BREQOE bit to 1 in BCR beforehand enables the BREQO signal to be output when a CBR
refresh*
Notes: 1. The auto refresh control function is not supported by the H8S/2426 Group and
Page 312 of 1372
2. The CBR refreshing control is not supported by the 5-V version.
1
/auto refresh*
Usage Notes
External Bus Release Function and All-Module-Clocks-Stopped Mode
External Bus Release Function and Software Standby
External Bus Release Function and CBR Refreshing/Auto Refreshing
H8S/2424 Group.
1
/auto refreshing*
2
request is issued.
2
cannot be executed while the external bus is released. Setting
H8S/2426, H8S/2426R, H8S/2424 Group
REJ09B0466-0350 Rev. 3.50
Jul 09, 2010
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