R5F21274SNFP#U0 Renesas Electronics America, R5F21274SNFP#U0 Datasheet - Page 276

IC R8C/27 MCU FLASH 32LQFP

R5F21274SNFP#U0

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

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
-

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Manufacturer
Quantity
Price
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Part Number:
R5F21274SNFP#U0R5F21274SNFP
Manufacturer:
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Quantity:
20 000
Company:
Part Number:
R5F21274SNFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
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Part Number:
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Manufacturer:
Renesas Electronics America
Quantity:
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Company:
Part Number:
R5F21274SNFP#U0R5F21274SNFP#X6
Manufacturer:
Renesas Electronics America
Quantity:
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 15.13
15.2.1
Table 15.7
i = 0 or 1
NOTE:
Bit Rate
115200
14400
19200
28800
38400
57600
(bps)
1200
2400
4800
9600
1. For the high-speed on-chip oscillator, the correction value in the FRA7 register should be written into the FRA1
In UART mode, the bit rate is the frequency divided by the UiBRG (i = 0 or 1) register.
register (for N, D version only).
This applies when the high-speed on-chip oscillator is selected as the system clock and bits FRA22 to FRA20 in
the FRA2 register are set to 000b (divide-by-2 mode). For the precision of the high-speed on-chip oscillator,
refer to 20. Electrical Characteristics .
Sep 26, 2008
Source
UiBRG
Count
Bit Rate
f8
f8
f8
f1
f1
f1
f1
f1
f1
f1
UiBRG register setting value =
UiBRG register setting value =
UART mode
Calculation Formula of UiBRG (i = 0 or 1) Register Setting Value
Bit Rate Setting Example in UART Mode (Internal Clock Selected)
i = 0 or 1
• Internal clock selected
• External clock selected
129 (81h)
129 (81h)
42 (2Ah)
10 (0Ah)
UiBRG
Setting
64 (40h)
32 (20h)
86 (56h)
64 (40h)
32 (20h)
21 (15h)
Value
System Clock = 20 MHz
Page 257 of 453
Actual Time
113636.36
14367.82
19230.77
29069.77
37878.79
56818.18
(bps)
1201.92
2403.85
4734.85
9615.38
Fj: Count source frequency of the UiBRG register (f1, f8, or f32)
fEXT: Count source frequency of the UiBRG register (external clock)
Setting
Error
(%)
-1.36
-0.22
-1.36
-1.36
-1.36
0.16 119 (77h)
0.16
0.16 119 (77h)
0.16
0.94
System Clock = 18.432 MHz
29 (1Dh)
29 (1Dh)
59 (3Bh)
79 (4Fh)
59 (3Bh)
UiBRG
Setting
39 (27h)
19 (13h)
Bit Rate × 16
Bit Rate × 16
Value
9 (09h)
fEXT
fj
Actual Time
115200.00
14400.00
19200.00
28800.00
38400.00
57600.00
(bps)
1200.00
2400.00
4800.00
9600.00
- 1
- 1
Setting
Error
(%)
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
(1)
12 (0Ch)
12 (0Ch) 38461.54
UiBRG
Setting
51 (33h)
25 (19h)
51 (33h)
25 (19h) 19230.77
34 (22h) 14285.71
16 (10h) 29411.76
Value
8 (08h) 55555.56
System Clock = 8 MHz
15. Serial Interface
1201.92
2403.85
4807.69
9615.38
Actual
(bps)
Time
Setting
Error
(%)
-0.79
-3.55
0.16
0.16
0.16
0.16
0.16
0.16
2.12

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