M38504E6FP#U0 Renesas Electronics America, M38504E6FP#U0 Datasheet - Page 35
M38504E6FP#U0
Manufacturer Part Number
M38504E6FP#U0
Description
MCU 4.0/5.5V 24K PB-FREE 42-SSOP
Manufacturer
Renesas Electronics America
Series
740/38000r
Datasheet
1.M38504E6FPU0.pdf
(103 pages)
Specifications of M38504E6FP#U0
Core Processor
740
Core Size
8-Bit
Speed
8MHz
Connectivity
SIO, UART/USART
Peripherals
PWM, WDT
Number Of I /o
32
Program Memory Size
24KB (24K x 8)
Program Memory Type
OTP
Ram Size
640 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 5x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
42-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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3850 Group (Spec.H/A)
(2) Asynchronous Serial I/O (UART) Mode
Clock asynchronous serial I/O mode (UART) can be selected by
clearing the serial I/O1 mode selection bit (b6) of the serial I/O1
control register to “0”.
Eight serial data transfer formats can be selected, and the transfer
formats used by a transmitter and receiver must be identical.
The transmit and receive shift registers each have a buffer, but the
Fig. 28 Block diagram of UART serial I/O1
Rev.3.01
P2
P2
P2
6
/S
4
5
/R
2003.06.20
/T
CLK1
X
X
X
D
D
IN
ST detector
BRG count source selection bit
1/4
page 33 of 97
Character length selection bit
Character length selection bit
8 bits
7 bits
Serial I/O1 synchronous clock selection bit
OE
Address 0018
PE FE
Receive buffer register
Receive shift register
Frequency division ratio 1/(n+1)
ST/SP/PA generator
Data bus
Data bus
16
Transmit buffer register
Baud rate generator
Transmit shift register
SP detector
Address 001C
Address
Serial I/O1 control register
two buffers have the same address in memory. Since the shift reg-
ister cannot be written to or read from directly, transmit data is
written to the transmit buffer register, and receive data is read
from the receive buffer register.
The transmit buffer register can also hold the next data to be
transmitted, and the receive buffer register can hold a character
while the next character is being received.
1/16
16
Clock control circuit
0018
16
Receive buffer full flag (RBF)
Receive interrupt request (RI)
Transmit interrupt source selection bit
Serial I/O1 status register
Address 001A
1/16
Transmit buffer empty flag (TBE)
Transmit shift completion flag (TSC)
UART control register
Transmit interrupt request (TI)
16
Address
Address 001B
0019
16
16