R5F61668RN50FPV Renesas Electronics America, R5F61668RN50FPV Datasheet - Page 883

• Manufacturer Part Number: R5F61668RN50FPV
• Description: IC H8SX/1668 MCU FLASH 144LQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of R5F61668RN50FPV

• 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: 1MB (1M x 8)
• Program Memory Type: FLASH
• Ram Size: 56K 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
• For Use With: R0K561668S000BE - KIT STARTER FOR H8SX/1668R0K561664S001BE - KIT STARTER FOR H8SX/1651HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

17.3
17.3.1
Either 8-bit or 24-bit counter operation can be selected for the timer counter.
Setting 1 to the TME bit in TCR32K starts the count-up operation.
A 32K timer interrupt (32KOVI) is generated by the interrupt cycle. Table 17.1 shows
relationships between the timer counter operations according to the setting of bits EXCKSN,
CKS1, and CKS0 in TCR32K and the interrupt cycles.
Table 17.1 Relationships between Counter Operations and 32KOVI Cycles
EXCKSN CKS1 CKS2
1
1
1
1
0
0
0
0
√ : in use
Setting
Operation
Basic Operation
0
0
1
1
0
0
1
1
− : not in use
0
1
0
1
0
1
0
1
Division
Ratio
Internally
SUBCK/32
SUBCK/64
SUBCK/128
SUBCK/256
SUBCK/16384 √
SUBCK/32768 √
SUBCK/16384 √
SUBCK/32768 √
Divided CLK
TCNT
32K1
√
√
√
√
Selected Counter Interrupt Cycles
TCNT
32K2
−
−
−
−
√
√
√
√
TCNT
32K3
−
−
−
−
√
√
√
√
Rev. 2.00 Sep. 24, 2008 Page 849 of 1468
Counter value
when interrupt
generates
TCNT32K1=H'FF
TCNT32K3=H'3B
TCNT32K1 to 3
=H'FFF3B
Section 17 32K Timer (TM32K)
32KOVI Cycle
250 ms
500 ms
1 s
2 s
30 s
60 s
Approx. 22.7
days
Approx. 45.5
days
REJ09B0412-0200