R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 562
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 529 of 723
Figure 25.12
RDRF bit in
SSSR register
RSSTP bit in
SSCRH register
RDRF bit in
SSSR register
RSSTP bit in
SSCRH register
Processing
by program
Processing
by program
• CPHS bit = 0 (data download at even edges), CPOS bit = 0 (“H” when clock stops), and BS3
• CPHS bit = 1 (data download at odd edges), CPOS bit = 0 (“H” when clock stops), and BS3 to
to BS0 = 1000b (8 bits)
BS0 = 1000b (8 bits)
(output)
(output)
SSCK
SSCK
SCS
SCS
SSI
SSI
Example of Synchronous Serial Communication Unit Operation during Data
Reception (4-Wire Bus Communication Mode, 8-Bit SSU Data Transfer Length)
BS0 to BS3: Bits in SSBR register
CPHS and CPOS: Bits in SSMR register
Dummy read in
SSRDR register
Dummy read in
SSRDR register
b7
b7
1 frame
RXI interrupt request
is generated
RXI interrupt request
is generated
1 frame
b0
Data read in SSRDR
register
Data read in SSRDR
register
b0
b7
b7
25. Synchronous Serial Communication Unit (SSU)
1 frame
RXI interrupt request
is generated
RXI interrupt request
is generated
1 frame
b0
b0
Set RSSTP
bit to 1
Set RSSTP
bit to 1
b7
b7
Data read in SSRDR
register
Data read in SSRDR
register
RXI interrupt request
is generated
RXI interrupt request
is generated
High-impedance
b0
High-impedance
b0
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