R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 293

• Manufacturer Part Number: R5F211B1SP#U0
• Description: IC R8C MCU FLASH 4K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/1Br

Specifications of R5F211B1SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
Table 18.10
NOTES:
Mode
EW1 During auto-erasure
18.7.1.4
18.7.1.5
18.7.1.6
18.7.1.7
1. Do not use the address match interrupt while a command is executing because the vector of the
2. Do not use a non-maskable interrupt while block 0 is being automatically erased because the fixed
Write 0 before writing 1 when setting the FMR01, FMR02, or FMR11 bit to 1. Do not generate an interrupt
between writing 0 and 1.
In EW0 Mode, if the supply voltage drops while rewriting any block in which a rewrite control program is
stored, it may not be possible to rewrite the flash memory because the rewrite control program cannot be
rewritten correctly. In this case, use standard serial I/O mode.
Do not write additions to the already programmed address.
Do not enter stop mode or wait mode during erase-suspend.
address match interrupt is allocated in ROM.
vector is allocated in block 0.
(erase- suspend
function enabled)
During auto-erasure
(erase- suspend
function disabled)
During auto-
programming
(program suspend
function enabled)
During auto-
programming
(program suspend
function disabled)
Dec 08, 2006
How to Access
Rewriting User ROM Area
Entering Stop Mode or Wait Mode
EW1 Mode Interrupts
Program
Status
Page 275 of 315
Auto-erasure is suspended after
td(SR-SUS) and interrupt handling
is executed. Auto-erasure can be
restarted by setting the FMR41 bit
in the FMR4 register to 0 (erase
restart) after interrupt handling
completes.
Auto-erasure has priority and the
interrupt request
acknowledgement is put on
standby. Interrupt handling is
executed after auto-erasure
completes.
Auto-programming is suspended
after td(SR-SUS) and interrupt
handling is executed. Auto-
programming can be restarted by
setting the FMR42 bit in the FMR4
register to 0 (program restart) after
interrupt handling completes.
Auto-programming has priority
and the interrupt request
acknowledgement is put on
standby. Interrupt handling is
executed after auto-programming
completes.
When Maskable Interrupt Request
is Acknowledged
Once an interrupt request is
acknowledged, auto-programming or
auto-erasure is forcibly stopped
immediately and the flash memory is
reset. Interrupt handling starts after
the fixed period and the flash memory
restarts. Since the block during auto-
erasure or the address during auto-
programming is forcibly stopped, the
normal value may not be read.
Execute auto-erasure again and
ensure it completes normally.
Since the watchdog timer does not
stop during the command operation,
interrupt requests may be generated.
Reset the watchdog timer regularly
using the erase-suspend function.
Stop Detection and Voltage Monitor 2
Interrupt Request is Acknowledged
When Watchdog Timer, Oscillation
18. Flash Memory