DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 483

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

10.4.4
In cascaded operation, two 16-bit counters for different channels are used together as a 32-bit
counter.
This function works by counting the channel 1 (channel 4) counter clock at overflow/underflow of
TCNT_2 (TCNT_5) as set in bits TPSC2 to TPSC0 in TCR.
Underflow occurs only when the lower 16-bit TCNT is in phase-counting mode.
Table 10.30 shows the register combinations used in cascaded operation.
Note: When phase counting mode is set for channel 1 or 4, the counter clock setting is invalid
Table 10.30 Cascaded Combinations
(1)
Figure 10.17 shows an example of the setting procedure for cascaded operation.
Combination
Channels 1 and 2
Channels 4 and 5
Example of Cascaded Operation Setting Procedure
and the counter operates independently in phase counting mode.
Cascaded Operation
Figure 10.17 Example of Cascaded Operation Setting Procedure
<Cascaded operation>
Cascaded operation
Set cascading
Start count
Upper 16 Bits
TCNT_1
TCNT_4
[1]
[2]
[1]
[2]
Set bits TPSC2 to TPSC0 in the channel 1
(channel 4) TCR to B'1111 to select TCNT_2
(TCNT_5) overflow/underflow counting.
Set the CST bit in TSTR for the upper and lower
channels to 1 to start the count operation.
Lower 16 Bits
TCNT_2
TCNT_5
Section 10 16-Bit Timer Pulse Unit (TPU)
Rev. 2.00 Jun. 28, 2007 Page 457 of 864
REJ09B0341-0200