HD64F2612FA20 Renesas Electronics America, HD64F2612FA20 Datasheet - Page 347
HD64F2612FA20
Manufacturer Part Number
HD64F2612FA20
Description
IC H8S MCU FLASH 128K 80QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2600r
Specifications of HD64F2612FA20
Core Processor
H8S/2600
Core Size
16-Bit
Speed
20MHz
Connectivity
CAN, SCI
Peripherals
POR, PWM, WDT
Number Of I /o
43
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
80-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HD64F2612FA20
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
HD64F2612FA20J
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
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13.5.3
If bits CKS0 to CKS2 in TCSR are written to while the WDT is operating, errors could occur in
the incrementation. Software must be used to stop the watchdog timer (by clearing the TME bit to
0) before changing the value of bits CKS0 to CKS2.
13.5.4
If the mode is switched from watchdog timer to interval timer while the WDT is operating, errors
could occur in the incrementation. Software must be used to stop the watchdog timer (by clearing
the TME bit to 0) before switching the mode.
13.5.5
This LSI is not reset internally if TCNT overflows while the RSTE bit is cleared to 0 during
watchdog timer operation, however TCNT and TCSR of the WDT are reset.
TCNT, TCSR, or RSTCR cannot be written to for 132 states following an overflow. During this
period, any attempt to read the WOVF flag is not acknowledged. Accordingly, wait 132 states
after overflow to write 0 to the WOVF flag for clearing.
13.5.6
When the OVF flag setting conflicts with the OVF flag reading in interval timer mode, writing 0
to the OVF bit may not clear the flag even though the OVF bit has been read while it is 1. If there
is a possibility that the OVF flag setting and reading will conflict, such as when the OVF flag is
polled with the intervel timer interrupt disabled, read the OVF bit while it is 1 at least twice before
writing 0 to the OVF bit to clear the flag.
Changing Value of CKS2 to CKS0
Switching between Watchdog Timer Mode and Interval Timer Mode
Internal Reset in Watchdog Timer Mode
OVF Flag Clearing in Intervel Timer Mode
Rev. 7.00 Sep. 11, 2009 Page 311 of 566
Section 13 Watchdog Timer
REJ09B0211-0700
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