R5F21191SP#U0 Renesas Electronics America, R5F21191SP#U0 Datasheet - Page 199

• Manufacturer Part Number: R5F21191SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/19r

Specifications of R5F21191SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, 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 4x1b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/18 Group, R8C/19 Group
Rev.1.30
REJ09B0222-0130
Figure 17.5
Flash Memory Control Register 0
b7 b6 b5 b4
NOTES:
1.
2.
3.
4.
5.
6.
0 0
To set this bit to 1, set it to 1 immediately after setting it first to 0. Do not generate an interrupt betw een setting the bit
to 0 and setting it to 1. Enter read array mode and set this bit to 0.
Set this bit to 1 immediately after setting it first to 0 w hile the FMR01 bit is set to 1.
Do not generate an interrupt betw een setting the bit to 0 and setting it to 1.
Set this bit by a program located in a space other than the flash memory.
This bit is set to 0 by executing the clear status command.
This bit is enabled w hen the FMR01 bit is set to 1 (CPU rew rite mode). When the FMR01 bit is set to 0, w riting 1 to the
FMSTP bit causes the FMSTP bit to be set to 1. The flash memory does not enter low -pow er consumption state nor is
it reset.
When setting the FMR01 bit to 0 (CPU rew rite mode disabled), the FMR02 bit is set to 0 (disables rew rite).
Apr 14, 2006
b3 b2 b1 b0
FMR0 Register
Bit Symbol
(b5-b4)
Symbol
FMR00
FMR02
FMSTP
FMR06
FMR07
FMR01
FMR0
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—
RY/BY
CPU rew rite mode select bit
Block 0, 1 rew rite enable bit
Flash memory stop bit
Reserved bits
Program status flag
Erase status flag
___
status flag
Address
Bit Name
01B7h
(4)
(4)
(3, 5)
(1)
(2, 6)
0 : Busy (w riting or erasing in progress)
1 : Ready
0 : CPU rew rite mode disabled
1 : CPU rew rite mode enabled
0 : Disables rew rite.
1 : Enables rew rite.
0 : Enables flash memory operation.
1 : Stops flash memory
Set to 0.
0 : Completed successfully
1 : Terminated by error
0 : Completed successfully
1 : Terminated by error
(enters low -pow er consumption state
and flash memory is reset).
After Reset
00000001b
Function
17. Flash Memory Version
RW
RW
RW
RW
RW
RO
RO
RO