DF36054FPJV Renesas Electronics America, DF36054FPJV Datasheet - Page 282

• Manufacturer Part Number: DF36054FPJV
• Description: MCU 3/5V 32K J-TEMP PB-FREE 64-L
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of DF36054FPJV

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SSU
• Peripherals: PWM, WDT
• Number Of I /o: 45
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 13 Watchdog Timer
13.2.2
TCWD is an 8-bit readable/writable up-counter. When TCWD overflows from H'FF to H'00, the
internal reset signal is generated and the WRST bit in TCSRWD is set to 1. TCWD is initialized to
H'00.
13.2.3
TMWD selects the input clock.
[Legend]
X: Don't care.
Rev. 4.00 Mar. 15, 2006 Page 248 of 556
REJ09B0026-0400
Bit
7
6 to 4
3
2
1
0
Bit Name
CKS7
CKS3
CKS2
CKS1
CKS0
Timer Counter WD (TCWD)
Timer Mode Register WD (TMWD)
Initial
Value
1
All 1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
Description
Clock Select 7
Selects the subtimer internal oscillator.
CKS7 CKS3
Reserved
These bits are always read as 1.
Clock Select 3 to 0
Select the clock to be input to TCWD.
1000: Internal clock: counts on /64
1001: Internal clock: counts on /128
1010: Internal clock: counts on /256
1011: Internal clock: counts on /512
1100: Internal clock: counts on /1024
1101: Internal clock: counts on /2048
1110: Internal clock: counts on /4096
1111: Internal clock: counts on /8192
0XXX: WDT internal oscillator
For the internal oscillator overflow periods, see section
22, Electrical Characteristics.
0
X
1
1
1
0
: SBT internal oscillator
: WDT internal oscillator
: WDT internal oscillator