HD6473937W Renesas Electronics America, HD6473937W Datasheet - Page 228
HD6473937W
Manufacturer Part Number
HD6473937W
Description
MCU FLASH OTP 60K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300L SLPr
Datasheet
1.HD6473937RXV.pdf
(523 pages)
Specifications of HD6473937W
Core Processor
H8/300L
Core Size
8-Bit
Speed
10MHz
Connectivity
SCI
Peripherals
POR, WDT
Number Of I /o
59
Program Memory Size
60KB (60K x 8)
Program Memory Type
OTP
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
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Part Number:
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All above attentions are also applied in 16-bit mode and 8-bit mode.
4. Timer counter (TCF) read/write
When øw/4 is selected as the internal clock in active (high-speed, medium-speed) mode, write on
TCF is impossible. And, when read TCF, as the system clock and internal clock are mutually
asynchronous, TCF synchronizes with synchronization circuit. This results in a maximum TCF
read value error of 1.
When read/write TCF in active (high-speed, medium-speed) mode is needed, please select internal
clock except for øw/4 before read/write.
In subactive mode, even øw/4 is selected as the internal clock, normal read/write TCF is possible.
214
Program process
Interrupt factor
generation signal
(Internal signal,
nega-active)
Overflow signal,
Compare match signal
(Internal signal,
nega-active)
Interrupt request flag
(IRRTFH, IRRTFL)
øw
Figure 9-7 Clear Interrupt Request Flag when Interrupt Factor Generation Signal is Valid
3. After read timer control status register F (TCSRF), clear timer overflow flags (OVFH,
4. Operate interrupt permission (set IENFH, IENFL to 1).
Method 2
1. Set interrupt handling routine time to more than time that calculated with (1) formula.
2. Clear interrupt request flags (IRRTFH, IRRTFL) at the end of interrupt handling routine.
3. After read timer control status register F (TCSRF), clear timer overflow flags (OVFH,
OVFL) and compare match flags (CMFH, CMFL).
OVFL) and compare match flags (CMFH, CMFL).
Interrupt
Interrupt request
flag clear
1
2
Interrupt
Interrupt request
flag clear
Normal
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