UPD70F3737GF-GAS-AX Renesas Electronics America, UPD70F3737GF-GAS-AX Datasheet - Page 585
UPD70F3737GF-GAS-AX
Manufacturer Part Number
UPD70F3737GF-GAS-AX
Description
MCU 32BIT V850ES/JX3-L 100-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3-Lr
Datasheet
1.UPD70F3737GF-GAS-AX.pdf
(1071 pages)
Specifications of UPD70F3737GF-GAS-AX
Core Processor
RISC
Core Size
32-Bit
Speed
20MHz
Connectivity
CSI, EBI/EMI, I²C, UART/USART
Peripherals
DMA, LVD, PWM, WDT
Number Of I /o
84
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 3.6 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UPD70F3737GF-GAS-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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(5) Allowable baud rate range during reception
The baud rate error range at the destination that is allowable during reception is shown below.
Caution The baud rate error indicated below is a theoretical value. In practice, the signal might be
As shown in Figure 16-18, the receive data latch timing is determined by the counter set using the UAnCTL2
register following start bit detection. The transmit data can be received normally if up to the last data (stop bit)
can be received in time for this latch timing.
When this is applied to 11-bit reception, the following is the theoretical result.
Remark
Maximum allowable
Minimum allowable
data frame length
data frame length
data frame length
BL = (Brate)
Minimum allowable data frame length: FLmin = 11 × BL −
Brate: UARTAn baud rate (n = 0 to 2)
k:
BL:
FL:
Latch timing margin: 2 clock cycles
distorted, or communication might not be performed normally even if the error is within the
allowable range. Therefore, the error must be minimized.
n = 0 to 5
UARTn
Setting value of UAnCTL2.UAnBRS7 to UAnCTL2.UAnBRS0 bits (n = 0 to 2)
1-bit data length
Length of 1 data frame
−
1
CHAPTER 16 ASYNCHRONOUS SERIAL INTERFACE A (UARTA)
Figure 16-18. Allowable Baud Rate Range During Reception
Latch timing
Start bit
Start bit
Start bit
Bit 0
User’s Manual U18953EJ5V0UD
Bit 0
BL
Bit 0
Bit 1
Bit 1
Bit 1
1 data frame (11 × BL = FL)
FLmin
k − 2
2k
FLmax
Bit 7
× BL =
Bit 7
Bit 7
21k + 2
Parity bit
Parity bit
2k
Parity bit
BL
Stop bit
Stop bit
Stop bit
583
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