HD64F36912GFH Renesas Electronics America, HD64F36912GFH Datasheet - Page 67

• 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: -

2.6
CPU operation is synchronized by a system clock ( ). The period from a rising edge of to the
next rising edge is called one state. A bus cycle consists of two states or three states. The cycle
differs depending on whether access is to on-chip memory or to on-chip peripheral modules.
2.6.1
Access to on-chip memory takes place in two states. The data bus width is 16 bits, allowing access
in byte or word size. Figure 2.9 shows the on-chip memory access cycle.
Basic Bus Cycle
Access to On-Chip Memory (RAM, ROM)
φ
Internal address bus
Internal read signal
Internal data bus
(read access)
Internal write signal
Internal data bus
(write access)
Figure 2.9 On-Chip Memory Access Cycle
T
1
state
Bus cycle
Address
Write data
Read data
T
Rev. 3.00 Sep. 14, 2006 Page 37 of 408
2
state
REJ09B0105-0300
Section 2 CPU