R5F21274SNFP#U0 Renesas Electronics America, R5F21274SNFP#U0 Datasheet - Page 391

• Manufacturer Part Number: R5F21274SNFP#U0
• Description: IC R8C/27 MCU FLASH 32LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/27r

Specifications of R5F21274SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 25
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
19.4.4
Table 19.5
D0 to D7: Indicate the data bus which is read when the read status register command is executed.
Bits FMR07 (SR5) to FMR06 (SR4) are set to 0 by executing the clear status register command.
When the FMR07 bit (SR5) or FMR06 bit (SR4) is set to 1, the program and block erase commands cannot
be accepted.
Status Register Bit
SR0 (D0)
SR1 (D1)
SR2 (D2)
SR3 (D3)
SR4 (D4)
SR5 (D5)
SR6 (D6)
SR7 (D7)
19.4.4.1
19.4.4.2
19.4.4.3
The status register indicates the operating status of the flash memory and whether an erase or program operation
has completed normally or in error. Status of the status register can be read by bits FMR00, FMR06, and
FMR07 in the FMR0 register.
Table 19.5 lists the Status Register Bits.
In EW0 mode, the status register can be read in the following cases:
The sequencer status bits indicate the operating status of the flash memory. SR7 is set to 0 (busy) during auto-
programming and auto-erasure, and is set to 1 (ready) at the same time the operation completes.
Refer to 19.4.5 Full Status Check.
Refer to 19.4.5 Full Status Check.
• When a given address in the user ROM area is read after writing the read status register command
• When a given address in the user ROM area is read after executing the program or block erase command
Sep 26, 2008
but before executing the read array command.
Status Registers
Sequencer Status (SR7 and FMR00 Bits)
Erase Status (SR5 and FMR07 Bits)
Program Status (SR4 and FMR06 Bits)
Status Register Bits
−
−
−
−
FMR06
FMR07
−
FMR00
FMR0 Register
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Bit
Reserved
Reserved
Reserved
Reserved
Program status Completed
Erase status
Reserved
Sequencer
status
Status Name
−
−
−
−
normally
Completed
normally
−
Busy
0
Description
−
−
−
−
Error
Error
−
Ready
1
−
−
−
−
0
0
−
1
19. Flash Memory
Value after
Reset