HD64F36912GFH Renesas Electronics America, HD64F36912GFH Datasheet - Page 113

• Manufacturer Part Number: HD64F36912GFH
• Description: IC H8 MCU FLASH 8K 32-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F36912GFH

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 12MHz
• Connectivity: I²C, SCI
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

5.5.2
Figure 5.11 shows an example of connecting a ceramic resonator.
5.5.3
To use the external clock, input the external clock on pin OSC1. Figure 5.12 shows an example of
connection. The duty cycle of the external clock signal must be 45 to 55%.
5.6
5.6.1
Prescaler S is a 13-bit counter using the system clock ( ) as its input clock. The outputs, which are
divided clocks, are used as internal clocks by the on-chip peripheral modules. Prescaler S is
initialized to H'0000 by a reset, and starts counting on exit from the reset state. In standby mode
and subsleep mode, the system clock pulse generator stops. Prescaler S also stops and is initialized
to H'0000. It cannot be read from or written to by the CPU.
The outputs from prescaler S is shared by the on-chip peripheral modules. The division ratio can
be set separately for each on-chip peripheral module. In active mode and sleep mode, the clock
input to prescaler S is a system clock with the division ratio specified by bits MA2 to MA0 in
SYSCR2.
Connecting Ceramic Resonator
External Clock Input Method
Prescaler
Prescaler S
Figure 5.11 Example of Connection to Ceramic Resonator
PC1/OSC2/CLKOUT
PC1/OSC2/CLKOUT
Figure 5.12 Example of External Clock Input
PC0/OSC1
PC0/OSC1
General port
C
C
1
2
Rev. 3.00 Sep. 14, 2006 Page 83 of 408
C = C = 5 to 30 pF
External clock input
1
Section 5 Clock Pulse Generators
2
REJ09B0105-0300