R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 185

• 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
Figure 15.12
15.2.2
Table 15.7
i = 0 or 1
Bit Rate
14400
19200
28800
31250
38400
51200
(bps)
1200
2400
4800
9600
In UART mode, the bit rate is the frequency divided by the UiBRG (i = 0 or 1) register.
Dec 08, 2006
Bit Rate
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
Source
• Internal clock selected
• External clock selected
Count
BRG
f8
f8
f8
f1
f1
f1
f1
f1
f1
f1
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Setting Value
129(81h)
129(81h)
42(2Ah)
64(40h)
32(20h)
86(56h)
64(40h)
39(27h)
32(20h)
23(17h)
UiBRG
System Clock = 20 MHz
Fj: Count source frequency of the UiBRG register (f1, f8, or f32)
fEXT : Count source frequency of the UiBRG register (external clock)
Actual Time
14367.82
19230.77
29069.77
31250.00
37878.79
52083.33
(bps)
1201.92
2403.85
4734.85
9615.38
Bit Rate × 16
Bit Rate × 16
fEXT
fj
Error (%)
-1.36
-0.22
-1.36
0.16
0.16
0.16
0.16
0.94
0.00
1.73
- 1
- 1
12(0Ch)
12(0Ch)
15(0Fh)
51(33h)
25(19h)
51(33h)
34(22h)
25(19h)
16(10h)
UiBRG
Setting
9(09h)
Value
System Clock = 8 MHz
Time (bps)
Actual
14285.71
19230.77
31250.00
38461.54
50000.00
29411.76
1201.92
2403.85
4807.69
9615.38
15. Serial Interface
Error (%)
-0.79
-2.34
0.16
0.16
0.16
0.16
0.16
2.12
0.00
0.16