R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 880

• Manufacturer Part Number: R5F61665N50FPV
• Description: MCU FLASH 512K ROM 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61665N50FPV

• Core Processor: H8SX
• Core Size: 16/32-Bit
• Speed: 50MHz
• Connectivity: EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, LVD, POR, PWM, WDT
• Number Of I /o: 92
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 17 32K Timer (TM32K)
17.3.2
When the EXCKSN bit in TCR32K is 1, the timer counter operates as an 8-bit counter.
Every time the value in TCNT32K1 reaches H'FF, a 32KOVI interrupt is generated. By setting the
CKS1 and CKS0 bits in TCR32K, intervals of 250ms, 500ms, 1s, and 2s between interrupts are
selectable.
17.3.3
When the EXCKSN bit in TCR32K is 0, the timer counter operates as a 24-bit counter. The lower-
order 8-bits are TCNT32K3, which operates as a free-running up-counter that counts from H'00 to
H'3B. The higher-order 16-bits in TCNT32K1 and TCNT32K2 act as an up-counter that counts
the number of times TCNT32K3=H'3B. Generation of the 32KOVI interrupt either for all values
with TCNT32K3=H'3B or when TCNT32K1 to TCNT32K3=H'FFFF3B can be selected by the
setting of the CKS1 bit. This setting in combination with the setting of the CKS0 bit can be used
to se the interrupt interval to 30s, 60s. approx. 22.7 days, or approx. 45.5 days
When the EXCKSN bit is 0, the CKS1 bit can be changed while the timer counter is operating
because the TME bit is 1. This allows variation of the 32KOV1 interrupt interval while the timer
counter is in operation. When the value of the CKS1 bit is from 0 to 1, the higher-order 16-bit
counter (TCNT32K1, TCNT32K2) resumes counting after being initialized to H'00_00.
Rev. 2.00 Oct. 21, 2009 Page 846 of 1454
REJ09B0498-0200
EXCKSN=1 Operation
EXCKSN=0 Operation
32KOVI
32KOVI: 32K timer interrupt
TCNT32K value
H'FF
H'00
Figure 17.2 Operation of 32K Timer when EXCKSN = 1
TME = 1
Overflow
32KOVI
Overflow
32KOVI
Overflow
3 clocks of 32Kφ
32KOVI
Overflow
32KOVI
Time