R5F61665N50FPV Renesas Electronics America, R5F61665N50FPV Datasheet - Page 893

MCU FLASH 512K ROM 144-LQFP

R5F61665N50FPV

Manufacturer Part Number
R5F61665N50FPV
Description
MCU FLASH 512K ROM 144-LQFP
Manufacturer
Renesas Electronics America
Series
H8® H8SX/1600r
Datasheet

Specifications of R5F61665N50FPV

Core Processor
H8SX
Core Size
16/32-Bit
Speed
50MHz
Connectivity
EBI/EMI, I²C, IrDA, SCI, SmartCard, USB
Peripherals
DMA, LVD, POR, PWM, WDT
Number Of I /o
92
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
40K x 8
Voltage - Supply (vcc/vdd)
3 V ~ 3.6 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F61665N50FPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
18.6
18.6.1
The watchdog timer's TCNT, TCSR, and RSTCSR registers differ from other registers in being
more difficult to write to. The procedures for writing to and reading these registers are given
below.
(1)
TCNT and TCSR must be written to by a word transfer instruction. They cannot be written to by a
byte transfer instruction.
For writing, TCNT and TCSR are assigned to the same address. Accordingly, perform data
transfer as shown in figure 18.4. The transfer instruction writes the lower byte data to TCNT or
TCSR.
To write to RSTCSR, execute a word transfer instruction for address H'FFA6. A byte transfer
instruction cannot be used to write to RSTCSR.
The method of writing 0 to the WOVF bit in RSTCSR differs from that of writing to the RSTE bit
in RSTCSR. Perform data transfer as shown in figure 18.4.
At data transfer, the transfer instruction clears the WOVF bit to 0, but has no effect on the RSTE
bit. To write to the RSTE bit, perform data transfer as shown in figure 18.4. In this case, the
transfer instruction writes the value in bit 6 of the lower byte to the RSTE bit, but has no effect on
the WOVF bit.
Writing to TCNT, TCSR, and RSTCSR
Usage Notes
Notes on Register Access
TCSR write:
Writing 0 to the WOVF bit in RSTCSR:
TCNT write or writing to the RSTE bit in RSTCSR:
Address: H'FFA4 (TCNT)
Address: H'FFA4 (TCSR)
Address: H'FFA6 (RSTCSR)
Figure 18.4 Writing to TCNT, TCSR, and RSTCSR
H'FFA6 (RSTCSR)
15
15
15
H'5A
H'A5
H'A5
8 7
8 7
8 7
Rev. 2.00 Oct. 21, 2009 Page 859 of 1454
Section 18 Watchdog Timer (WDT)
Write data
Write data
H'00
0
0
0
REJ09B0498-0200

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