HD6473837H Renesas Electronics America, HD6473837H Datasheet - Page 220

• Manufacturer Part Number: HD6473837H
• Description: IC H8 MCU OTP 60K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Lr

Specifications of HD6473837H

• Core Processor: H8/300L
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: SCI
• Peripherals: LCD, PWM
• Number Of I /o: 84
• Program Memory Size: 60KB (60K x 8)
• Program Memory Type: OTP
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Bit 2: CMFL
0
1
Bit 1—Timer Overflow Interrupt Enable L (OVIEL): Bit 1 enables or disables TCFL overflow
interrupts.
Bit 1: OVIEL
0
1
Bit 0—Counter Clear L (CCLRL): Bit 0 selects whether or not TCFL is cleared when a
compare match occurs between TCFL and OCRFL.
Bit 0: CCLRL
0
1
9.5.3
TCF and OCRF are 16-bit read/write registers, whereas the data bus between the CPU and on-chip
peripheral modules has an 8-bit width. For this reason, when the CPU accesses TCF or OCRF, it
makes use of an 8-bit temporary register (TEMP).
In 16-bit mode, when reading or writing TCF or writing OCRF, always use two consecutive byte
size MOV instructions, and always access the upper byte first. Data will not be transferred
properly if only the upper byte or only the lower byte is accessed. In 8-bit mode there is no such
restriction on the order of access.
Write Access: When the upper byte is written, the upper-byte data is loaded into the TEMP
register. Next when the lower byte is written, the data in TEMP goes to the upper byte of the
register, and the lower-byte data goes directly to the lower byte of the register. Figure 9.5 shows a
TCF write operation when H'AA55 is written to TCF.
Interface with the CPU
Description
Clearing conditions:
After reading CMFL = 1, cleared by writing 0 to CMFL
Setting conditions:
Set when the TCFL value matches the OCRFL value
Description
TCFL overflow interrupt disabled
TCFL overflow interrupt enabled
Description
TCFL clearing by compare match disabled
TCFL clearing by compare match enabled
(initial value)
(initial value)
(initial value)
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