R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 293

• 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 14.116 TREHR Register in Real-Time Clock Mode
Figure 14.117 TREWK Register in Real-Time Clock Mode
Timer RE Hour Data Register
Timer RE Day of Week Data Register
b7 b6 b5 b4
b7 b6 b5 b4 b3 b2
Feb 29, 2008
b3 b2
b1 b0
b1 b0
Bit Symbol
Bit Symbol
Symbol
TREHR
TREWK
(b6-b3)
Symbol
HR00
HR01
HR02
HR03
HR10
HR11
BSY
(b6)
WK0
WK2
WK1
BSY
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1st digit of hour count bits
2nd digit of hour count bits
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Timer RE busy flag
Day of w eek count bits
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Timer RE busy flag
Address
Bit Name
011Ah
Address
Bit Name
011Bh
Count 0 to 9 every hour. When the
digit moves up, 1 is added to the 2nd
digit of hour.
Count 0 to 1 w hen the H12_H24 bit is
set to 0 (12-hour mode).
Count 0 to 2 w hen the H12_H24 bit is
set to 1 (24-hour mode).
This bit is set to 1 w hile registers TRESEC,
TREMIN, TREHR, and TREWK are updated.
b2 b1 b0
0 0 0 : Sunday
0 0 1 : Monday
0 1 0 : Tuesday
0 1 1 : Wednesday
1 0 0 : Thursday
1 0 1 : Friday
1 1 0 : Saturday
1 1 1 : Do not set.
This bit is set to 1 w hile registers TRESEC,
TREMIN, TREHR, and TREWK are updated.
After Reset
Function
00h
After Reset
Function
00h
0 to 9
(BCD
0 to 2
(BCD
code)
code)
Setting
Range
14. Timers
RW
RW
RW
RW
RO
RW
RW
RW
RW
RW
RW
RW
RO
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