R5F61668RN50FPV Renesas Electronics America, R5F61668RN50FPV Datasheet - Page 853

• 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: -

16.3.1
TCNT is an 8-bit readable/writable up-counter. TCNT_0 and TCNT_1 comprise a single 16-bit
register so they can be accessed together by a word transfer instruction. Bits CKS2 to CKS0 in
TCR and bits ICKS1 and ICKS0 in TCCR are used to select a clock. TCNT can be cleared by an
external reset input signal, compare match A signal, or compare match B signal. Which signal to
be used for clearing is selected by bits CCLR1 and CCLR0 in TCR. When TCNT overflows from
H'FF to H'00, bit OVF in TCSR is set to 1. TCNT is initialized to H'00.
16.3.2
TCORA is an 8-bit readable/writable register. TCORA_0 and TCORA_1 comprise a single 16-bit
register so they can be accessed together by a word transfer instruction. The value in TCORA is
continually compared with the value in TCNT. When a match is detected, the corresponding
CMFA flag in TCSR is set to 1. Note however that comparison is disabled during the T2 state of a
TCORA write cycle. The timer output from the TMO pin can be freely controlled by this compare
match signal (compare match A) and the settings of bits OS1 and OS0 in TCSR. TCORA is
initialized to H'FF.
Bit
Bit Name
Initial Value
R/W
Bit
Bit Name
Initial Value
R/W
Timer Counter (TCNT)
Time Constant Register A (TCORA)
R/W
R/W
7
0
7
1
R/W
R/W
6
0
6
1
R/W
R/W
5
0
5
1
R/W
TCORA_0
R/W
TCNT_0
4
0
4
1
R/W
R/W
3
0
3
1
R/W
R/W
2
0
2
1
R/W
R/W
1
0
1
1
R/W
R/W
0
0
0
1
R/W
R/W
7
0
7
1
Rev. 2.00 Sep. 24, 2008 Page 819 of 1468
R/W
R/W
6
0
6
1
R/W
R/W
5
0
5
1
Section 16 8-Bit Timers (TMR)
R/W
TCORA_1
R/W
TCNT_1
4
0
4
1
R/W
R/W
3
0
3
1
R/W
R/W
REJ09B0412-0200
2
0
2
1
R/W
R/W
1
0
1
1
R/W
R/W
0
0
0
1