DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 357

• Manufacturer Part Number: DF2148RTE20IV
• Description: MCU 5V 128K I-TEMP,PB-FREE, 100-
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148RTE20IV

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

11.2
11.2.1
FRC is a 16-bit readable/writable up-counter that increments on an internal pulse generated from a
clock source. The clock source is selected by bits CKS1 and CKS0 in TCR.
FRC can also be cleared by compare-match A.
When FRC overflows from H'FFFF to H'0000, the overflow flag (OVF) in TCSR is set to 1.
FRC is initialized to H'0000 by a reset and in hardware standby mode.
11.2.2
OCRA and OCRB are 16-bit readable/writable registers, the contents of which are continually
compared with the value in the FRC. When a match is detected, the corresponding output compare
flags (OCFA or OCFB) is set in TCSR.
In addition, if the output enable bit (OEA or OEB) in TOCR is set to 1, when OCR and FRC
values match, the logic level selected by the output level bit (OLVLA or OLVLB) in TOCR is
output at the output compare pin (FTOA or FTOB). Following a reset, the FTOA and FTOB
output levels are 0 until the first compare-match.
OCR is initialized to H'FFFF by a reset and in hardware standby mode.
Read/
Read/
Bit
Initial
Bit
Initial
value
value
Write
Write
Register Descriptions
Free-Running Counter (FRC)
Output Compare Registers A and B (OCRA, OCRB)
R/W
R/W
15
15
0
1
R/W
R/W
14
14
0
1
R/W
R/W
13
13
0
1
R/W
R/W
12
12
0
1
R/W
R/W
11
11
0
1
R/W
R/W
10
10
0
1
R/W
R/W
9
0
9
1
R/W
R/W
8
0
8
1
R/W
R/W
Rev. 4.00 Sep 27, 2006 page 311 of 1130
7
0
7
1
Section 11 16-Bit Free-Running Timer
R/W
R/W
6
0
6
1
R/W
R/W
5
0
5
1
R/W
R/W
4
0
4
1
R/W
R/W
3
0
3
1
REJ09B0327-0400
R/W
R/W
2
0
2
1
R/W
R/W
1
0
1
1
R/W
R/W
0
0
0
1