R5F21294SNSP#U0 Renesas Electronics America, R5F21294SNSP#U0 Datasheet - Page 32

• Manufacturer Part Number: R5F21294SNSP#U0
• Description: MCU 3/5V 16K+2K 20PIN-SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/29r

Specifications of R5F21294SNSP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• 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 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/28 Group, R8C/29 Group
Rev.2.10
REJ09B0279-0210
3.
3.1
Figure 3.1
Figure 3.1 is a Memory Map of R8C/28 Group. The R8C/28 group has 1 Mbyte of address space from addresses
00000h to FFFFFh.
The internal ROM is allocated lower addresses, beginning with address 0FFFFh. For example, a 16-Kbyte internal
ROM area is allocated addresses 0C000h to 0FFFFh.
The fixed interrupt vector table is allocated addresses 0FFDCh to 0FFFFh. They store the starting address of each
interrupt routine.
The internal RAM is allocated higher addresses, beginning with address 00400h. For example, a 1-Kbyte internal
RAM area is allocated addresses 00400h to 007FFh. The internal RAM is used not only for storing data but also for
calling subroutines and as stacks when interrupt requests are acknowledged.
Special function registers (SFRs) are allocated addresses 00000h to 002FFh. The peripheral function control
registers are allocated here. All addresses within the SFR, which have nothing allocated are reserved for future use
and cannot be accessed by users.
Memory
0YYYYh
0FFFFh
FFFFFh
002FFh
00000h
00400h
NOTE:
0XXXh
R5F21282SNSP, R5F21282SDSP,
R5F21282SNXXXSP, R5F21282SDXXXSP
R5F21284SNSP, R5F21284SDSP,
R5F21284JSP, R5F21284KSP,
R5F21284SNXXXSP, R5F21284SDXXXSP,
R5F21284JXXXSP, R5F21284KXXXSP
R5F21286JSP, R5F21286KSP,
R5F21286JXXXSP, R5F21286KXXXSP
R8C/28 Group
Sep 26, 2008
1. The blank regions are reserved. Do not access locations in these regions.
Memory Map of R8C/28 Group
Function Registers
(Refer to 4. Special
(program ROM)
Internal ROM
Internal RAM
(SFRs))
Part Number
SFR
Page 13 of 441
16 Kbytes
32 Kbytes
8 Kbytes
0FFDCh
Size
0FFFFh
Internal ROM
Address 0YYYYh
Watchdog timer/oscillation stop detection/voltage monitor
0C000h
0E000h
08000h
Undefined instruction
BRK instruction
Address match
Single step
(Reserved)
(Reserved)
Overflow
1.5 Kbytes
Reset
512 bytes
1 Kbyte
Size
Internal RAM
Address 0XXXXh
005FFh
007FFh
009FFh
3. Memory