R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 329

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.4
SS Mode Register
b7 b6 b5 b4 b3 b2 b1 b0
NOTE:
1. Refer to 16.2.1.1 Association betw een Transfer Clock Polarity, Phase, and Data for the settings of the CPHS
and CPOS bits.
Feb 29, 2008
1
SSMR Register
Bit Symbol
Symbol
SSMR
CPOS
CPHS
BC0
BC1
BC2
(b3)
(b4)
MLS
Page 310 of 485
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Bits counter 2 to 0
Reserved bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 1.
SSCK clock phase select bit
SSCK clock polarity select bit
MSB first/LSB first select bit
Address
Bit Name
00BAh
(1)
(1)
Set to 1.
When read, the content is 1.
0 : Change data at odd edge
1 : Change data at even edge
0 : “H” w hen clock stops
1 : “L” w hen clock stops
0 : Transfers data MSB first
1 : Transfers data LSB first
b2 b1 b0
0 0 0 : 8 bits left
0 0 1 : 1 bit left
0 1 0 : 2 bits left
0 1 1 : 3 bits left
1 0 0 : 4 bits left
1 0 1 : 5 bits left
1 1 0 : 6 bits left
1 1 1 : 7 bits left
(Dow nload data at even edge)
(Dow nload data at odd edge)
16. Clock Synchronous Serial Interface
After Reset
00011000b
Function
RW
RW
RW
RW
RW
RO
RO
RO
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