UPD70F3737GC-UEU-AX Renesas Electronics America, UPD70F3737GC-UEU-AX Datasheet - Page 498

• Manufacturer Part Number: UPD70F3737GC-UEU-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3737GC-UEU-AX

• Package / Case: *
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 20MHz
• Number Of I /o: 84
• Core Processor: RISC
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Program Memory Size: 128KB (128K x 8)
• Data Converters: A/D 12x10b, D/A 2x8b
• Oscillator Type: Internal
• Peripherals: DMA, LVD, PWM, WDT
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Core Size: 32-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

498
Therefore, the maximum baud rate that can be received by the destination is as follows.
Similarly, obtaining the following maximum allowable transfer rate yields the following.
Therefore, the minimum baud rate that can be received by the destination is as follows.
Obtaining the allowable baud rate error for UARTAn and the destination from the above-described equations for
obtaining the minimum and maximum baud rate values yields the following.
Remarks 1. The reception accuracy depends on the bit count in 1 frame, the input clock
4
8
20
50
100
255
Division Ratio (k)
10
11
BRmax = (FLmin/11)
BRmin = (FLmax/11)
× FLmax = 11 × FL −
FLmax =
2. k: Setting value of UAnCTL2.UAnBRS7 to UAnCTL2.UAnBRS0 bits (n = 0 to 2)
CHAPTER 15 ASYNCHRONOUS SERIAL INTERFACE A (UARTA)
Table 15-4. Maximum/Minimum Allowable Baud Rate Error
frequency, and the division ratio (k). The higher the input clock frequency
and the larger the division ratio (k), the higher the accuracy.
21k − 2
Maximum Allowable Baud Rate Error
20 k
−
−
1
1
=
FL × 11
=
Preliminary User’s Manual U18953EJ1V0UD
k + 2
2 × k
21k − 2
21k + 2
20k
22k
+2.32%
+3.52%
+4.26%
+4.56%
+4.66%
+4.72%
× FL =
Brate
Brate
21k − 2
2 × k
FL
Minimum Allowable Baud Rate Error
−2.43%
−3.61%
−4.30%
−4.58%
−4.67%
−4.72%