DF38602RFT10 Renesas Electronics America, DF38602RFT10 Datasheet - Page 105

• Manufacturer Part Number: DF38602RFT10
• Description: MCU 3V 16K 32-QFN
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H SLPr

Specifications of DF38602RFT10

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 10MHz
• Connectivity: I²C, IrDA, SCI, SSU
• Peripherals: POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: HD64F38602RFT10; HD64F38602RFT10

4.4
This LSI is equipped with two on-chip prescalers (prescaler S and prescaler W), which have
different input clocks.
Prescaler S is a 13-bit counter using the system clock (φ) as its input clock. Its prescaled outputs
provide internal clock signals for on-chip peripheral modules. Prescaler W is an 8-bit counter
using φ
internal clock signals for on-chip peripheral modules.
4.4.1
Prescaler S is a 13-bit counter using the system clock (φ) as its input clock. A divided output is
used as an internal clock of an on-chip peripheral module. Prescaler S is initialized to H'0000 at a
reset, and starts counting up on exit from the reset state. In standby mode, watch mode, subactive
mode, and subsleep mode, prescaler S stops and is initialized to H'0000. The CPU cannot read
from or write to prescaler S.
The output from prescaler S is shared by the on-chip peripheral modules. In active (medium-
speed) mode and sleep (medium-speed) mode, the clock input to prescaler S is determined by the
division ratio designated by the MA1 and MA0 bits in SYSCR1.
4.4.2
Prescaler W is an 8-bit counter using φ
A divided output is used as an internal clock of an on-chip peripheral module. Prescaler W is
initialized to H'00 at a reset, and starts counting up on exit from the reset state. In standby mode,
prescaler W is halted. Even when transiting to watch mode, subactive mode, and subsleep mode,
prescaler W continues operation.
W
/4, which is 1/4th of the watch clock φ
Prescaler S
Prescaler W
Prescalers
W
/4, which is 1/4th of the watch clock φ
W
, as its input clock. Its prescaled outputs provide
Rev. 3.00 May 15, 2007 Page 71 of 518
Section 4 Clock Pulse Generators
W
, as its input clock.
REJ09B0152-0300