DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 637

• Manufacturer Part Number: DF3052BX25V
• Description: MCU 5V 512K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of DF3052BX25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

19.1
The H8/3052BF has a built-in clock pulse generator (CPG) that generates the system clock ( ) and
other internal clock signals ( /2 to /4096). After duty adjustment, a frequency divider divides the
clock frequency to generate the system clock ( ). The system clock is output at the pin
furnished as a master clock to prescalers that supply clock signals to the on-chip supporting
modules. Frequency division ratios of 1/1, 1/2, 1/4, and 1/8 can be selected
divider by settings in a division control register (DIVCR). Power consumption in the chip is
reduced in almost direct proportion to the frequency division ratio.
Notes: 1. Usage of the pin differs depending on the chip operating mode and the PSTOP bit
2. The division ratio of the frequency divider can be changed dynamically during
Overview
where,
setting in the module standby control register (MSTCR). For details, see section 20.7,
System Clock Output Disabling Function.
operation. The clock output at the pin also changes when the division ratio is
changed. The frequency output at the pin is shown below.
= EXTAL
EXTAL: Frequency of crystal resonator or external clock signal
n:
Section 19 Clock Pulse Generator
Frequency division ratio (n = 1/1, 1/2, 1/4, or 1/8)
n
Rev. 3.00 Mar 21, 2006 page 607 of 814
Section 19 Clock Pulse Generator
*2
for the frequency
REJ09B0302-0300
*
1
and