M30845FJGP#U3 Renesas Electronics America, M30845FJGP#U3 Datasheet - Page 506

IC M32C MCU FLASH 512K 144LQFP

M30845FJGP#U3

Manufacturer Part Number
M30845FJGP#U3
Description
IC M32C MCU FLASH 512K 144LQFP
Manufacturer
Renesas Electronics America
Series
M16C™ M32C/80r
Datasheets

Specifications of M30845FJGP#U3

Core Processor
M32C/80
Core Size
16/32-Bit
Speed
32MHz
Connectivity
CAN, I²C, IEBus, SIO, UART/USART
Peripherals
DMA, PWM, WDT
Number Of I /o
121
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
24K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 5.5 V
Data Converters
A/D 34x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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M
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27.10 Serial I/O
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C
27.10.1 Clock Synchronous Serial I/O Mode
1
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0 .
B
The RTS2 and CLK2 pins are placed in high-impedance states when a low-level ("L") signal is applied to
the NMI pin while the INV03 to INV02 bits in the INVC0 register are set to "11
phase output by an "L" signal applied to the NMI pin).
0
1
4
27.10.1.1 Transmission /Reception
27.10.1.2 Transmission
27.10.1.3 Reception
0
G
When the RTS function is used while an external clock is selected, the output level of the RTSi pin is
held "L" indicating that the microcomputer is ready for reception. The transmitting microcomputer is
notified that reception is possible. The output level of the RTSi pin becomes high ("H") when reception
begins. Therefore, connecting the RTSi pin to the CTSi pin of the transmitting microcomputer synchro-
nizes transmission and reception. The RTS function is disabled if an internal clock is selected.
When an external clock is selected while the CKPOL bit in the UiC0 (i=0 to 4) register is set to "0" (data
is transmitted on the falling edge of the transfer clock and received on the rising edge) and the external
clock is held "H", or when the CKPOL bit is set to "1" (data is transmitted on the rising edge of the
transfer clock and received on the falling edge) and the external clock is held "L", meet the following
conditions:
Activating the transmitter in clock synchronous serial I/O mode generates the shift clock. Therefore,
set for transmission even if the microcomputer is used for reception only. Dummy data is output from
the TxDi pin while receiving.
If an internal clock is selected, the shift clock is generated when the TE bit in the UiC1 registers is set
to "1" (receive enabled) and dummy data is set in the UiTB register. If an external clock is selected, the
shift clock is generated when the external clock is input into CLKi pin while the TE bit is set to "1"
(receive enabled) and dummy data is set in the UiTB register.
When receiving data consecutively while the RE bit in the UiC1 register is set to "1" (data in the UiRB
register) and the next data is received by the UARTi reception register, an overrun error occurs and
the OER bit in the UiRB register is set to "1" (overrun error). In this case, the UiRB register is indeter-
minate. When overrun error occurs, program both reception and transmission registers to retransmit
earlier data. The IR bit in the SiRIC does not change when an overrun error occurs.
When receiving data consecutively, feed dummy data to the low-order byte in the UiTB register every
time a reception is made.
When an external clock is selected while the CKPOL bit in the UiC0 register is set to "0" (data is
transmitted on the falling edge of the transfer clock and received on the rising edge) and the external
clock is held "H" or when the CKPOL bit is set to "1" (data is transmitted on the rising edge of the
transfer clock and received on the falling edge) and the external clock is held "L", meet the following
conditions:
3
J
______
6
• Set the TE bit in the UiC1 register to "1" (receive enabled)
• Set the TI bit in the UiC1 register to "0" (data in the UiTB register)
• Apply "L" signal to the CTSi pin if the CTS function is selected
• Set the RE bit in the UiC1 register to "1" (receive enabled)
• Set the TE bit in the UiC1 register to "1" (transmit enabled)
• Set the TI bit in the UiC1 register to "0" (data in the UiTB register)
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Page 483
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27. Precautions (Serial I/O)
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