HD64F3664FY Renesas Electronics America, HD64F3664FY Datasheet - Page 71

• Manufacturer Part Number: HD64F3664FY
• Description: IC H8 MCU FLASH 32K 48QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300H Tinyr

Specifications of HD64F3664FY

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: I²C, SCI
• Peripherals: PWM, WDT
• Number Of I /o: 29
• 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: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 48-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

2.6
CPU operation is synchronized by a system clock (φ) or a subclock (φ
edge of φ or φ
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)
SUB
to the next rising edge is called one state. A bus cycle consists of two states or
Internal address bus
Internal read signal
Internal data bus
(read access)
Internal write signal
Internal data bus
(write access)
or
SUB
Figure 2.9 On-Chip Memory Access Cycle
T
1
state
Bus cycle
Address
Write data
Read data
T
Rev. 6.00 Mar. 24, 2006 Page 41 of 412
2
state
SUB
). The period from a rising
REJ09B0142-0600
Section 2 CPU