R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 297

• 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 14.122 Operating Example in Real-Time Clock Mode
Feb 29, 2008
(when MNIE bit in TRECR2 register is set
(when SEIE bit in TRECR2 register is set
to 1 (enable periodic interrupt triggered
to 1 (enable periodic interrupt triggered
IR bit in TREIC register
IR bit in TREIC register
BSY: Bit in registers TRESEC, TREMIN, TREHR, and TREWK
Bits MN12 to MN00 in
Bits HR11 to HR00 in
Bits SC12 to SC00 in
Bits WK2 to WK0 in
Page 278 of 485
TRESEC register
TRECR1 register
TREMIN register
TREWK register
TREHR register
every second))
every minute))
PM bit in
BSY bit
1
0
1
0
1
0
(Not changed)
(Not changed)
(Not changed)
58
Approx.
62.5 ms
03
Set to 0 by acknowledgement
of interrupt request
59
or a program
1s
Approx.
62.5 ms
00
04
14. Timers