R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 47
![MCU 1KB FLASH 32K ROM 48-LQFP](/photos/28/61/286102/48-lqfp__plqp0048kb-a_sml.jpg)
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 14 of 723
3.
3.1
Figure 3.1
Figure 3.1 is a Memory Map of R8C/34C Group. The R8C/34C Group has a 1-Mbyte address space from addresses
00000h to FFFFFh. The internal ROM (program ROM) is allocated lower addresses, beginning with address
0FFFFh. For example, a 32-Kbyte internal ROM area is allocated addresses 08000h to 0FFFFh.
The fixed interrupt vector table is allocated addresses 0FFDCh to 0FFFFh. The starting address of each interrupt
routine is stored here.
The internal ROM (data flash) is allocated addresses 03000h to 03FFFh.
The internal RAM is allocated higher addresses, beginning with address 00400h. For example, a 2.5-Kbyte internal
RAM area is allocated addresses 00400h to 00DFFh. The internal RAM is used not only for data storage but also as
a stack area when a subroutine is called or when an interrupt request is acknowledged.
Special function registers (SFRs) are allocated addresses 00000h to 002FFh and 02C00h to 02FFFh. Peripheral
function control registers are allocated here. All unallocated spaces within the SFRs are reserved and cannot be
accessed by users.
R5F21344CNFP, R5F21344CDFP
R5F21345CNFP, R5F21345CDFP
R5F21346CNFP, R5F21346CDFP
0XXXXh
0YYYYh
02C00h
0FFFFh
ZZZZZh
FFFFFh
02FFFh
03FFFh
Memory
002FFh
00000h
00400h
03000h
Notes:
1. Data flash indicates block A (1 Kbyte), block B (1 Kbyte), block C (1 Kbyte), and block D (1 Kbyte).
2. The blank areas are reserved and cannot be accessed by users.
R8C/34C Group
(Refer to 4. Special Function
Part Number
(program ROM)
(program ROM)
Function Registers
(Refer to 4. Special
Internal ROM
Internal ROM
Internal RAM
Registers (SFRs))
(data flash)
Internal ROM
Memory Map of R8C/34C Group
(SFRs))
SFR
SFR
(1)
16 Kbytes
24 Kbytes
32 Kbytes
Size
0FFDCh
0FFD8h
0FFFFh
Address 0YYYYh
0C000h
0A000h
08000h
Internal ROM
Watchdog timer, oscillation stop detection, voltage monitor
Undefined instruction
Address ZZZZZh
BRK instruction
Address match
Reserved area
Address break
Single step
(Reserved)
Overflow
Reset
−
−
−
1.5 Kbytes
2.5 Kbytes
2 Kbytes
Size
Internal RAM
Address 0XXXXh
00BFFh
00DFFh
009FFh
3. Memory
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