R5F61668RN50FPV Renesas Electronics America, R5F61668RN50FPV Datasheet - Page 880

• 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: -

Section 17 32K Timer (TM32K)
17.2
The TM32K has the following registers.
• Timer control register (TCR32K)
• Timer counter (TCNT32K1, TCNT32K2, TCNT32K3)
17.2.1
TCR32K enables the timer, stops the subclock oscillator, and selects the clock source to be input
to TCNT32K. Change values of the bits when TME=0.
Rev. 2.00 Sep. 24, 2008 Page 846 of 1468
REJ09B0412-0200
Bit
7
1
0
6
Bit
BIt Name
Initial Value
R/W
Bit Name
EXCKSN
CKS1
CKS0

Register Descriptions
Timer Control Register (TCR32K)
EXCKSN
R/W
7
1
Initial
Value
1
0
0
1

R
6
1
R/W
R/W
R/W
R/W
R
TME
R/W
5
0
Description
Extended Clock Select and Clock Select 1, 0
These bits select the internally divided clock source to be
input to TCNT32K. The interrupt cycle for SUBCK =
32.768 kHz is indicated in parentheses.
When EXCKSN = 1:
00: Clock SUBCK/32 (cycle: 250 ms)
01: Clock SUBCK/64 (cycle: 500 ms)
10: Clock SUBCK/128 (cycle: 1 s)
11: Clock SUBCK/256 (cycle: 2 s)
When EXCKSN = 0:
00: Clock SUBCK/16384 (cycle: 30 s)
01: Clock SUBCK/32768 (cycle: 60 s)
10: Clock SUBCK/16384 (cycle: approx. 22.7 days)
11: Clock SUBCK/32768 (cycle: approx. 45.5 days)
Reserved
This bit is always read as 1 and cannot be modified.

R
4
1

R
3
1
OSC32STP
R/W
2
0
CKS1
R/W
1
0
CKS0
R/W
0
0