DF36054GFPJ Renesas Electronics America, DF36054GFPJ Datasheet - Page 419

• Manufacturer Part Number: DF36054GFPJ
• Description: MCU 3/5V 32K J-TEMP POR&LVD 64-Q
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of DF36054GFPJ

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: CAN, SCI, SSU
• Peripherals: LVD, POR, 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F36054GFPJ; HD64F36054GFPJ

Table 17.1 Example of Subclock Error
Condition: System clock = 10 MHz, on-chip oscillator = 400 kHz, and subclock = 12 kHz
Count Value n
Division ratio k
Rounding error of
division ratio
Rounding error of
division ratio
error
Subclock error
In addition to the above rounding error, the subtimer may have a count error caused by time
lag between the system clock and the on-chip oscillator. The example is shown below.
After deciding the division ratio according to formulas (1) to (3), the division ratio is
configured in ROPCR. After ROPCR divides clocks of the on-chip oscillator, clocks for the
subtimer counter, input clocks to the system, and input clocks to the watchdog timer are
generated.
count
49
34
Min.
2.0
Write calculated division ratio in ROPCR
Figure 17.3 SBTPS Setting Flowchart
Configuration of division ratio completed
Start configuration of division ratio
Clear PCEF flag in SBTCTL to 0
Set OSCEB bit in SBTCTL to 1
PCEF flag in SBTCTL = 1?
Calculate division ratio
Yes
Expected Value
50
33
1.0
No
Rev. 4.00 Mar. 15, 2006 Page 385 of 556
Section 17 Subsystem Timer (Subtimer)
Max.
51
33
1.0
REJ09B0026-0400