HD64F3029XBL25V Renesas Electronics America, HD64F3029XBL25V Datasheet - Page 604

• Manufacturer Part Number: HD64F3029XBL25V
• Description: MCU 5V 512K,PB-FREE 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3029XBL25V

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 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: -

17.3
Operation
When the RAME bit is set to 1, the on-chip RAM is enabled. Accesses to addresses H'FBF20 to
H'FFF1F in modes 1, 2, and 7, and to addresses H'FFBF20 to H'FFFF1F in the H8/3029 in modes
3, 4, and 5, are directed to the on-chip RAM. In modes 1 to 5 (expanded modes), when the RAME
bit is cleared to 0, the off-chip address space is accessed. In mode 7 (single-chip mode), when the
RAME bit is cleared to 0, the on-chip RAM is not accessed: read access always results in H'FF
data, and write access is ignored.
Since the on-chip RAM is connected to the CPU by an internal 16-bit data bus, it can be written
and read by word access. It can also be written and read by byte access. Byte data is accessed in
two states using the upper 8 bits of the data bus. Word data starting at an even address is accessed
in two states using all 16 bits of the data bus.
Rev. 2.0, 06/04, page 575 of 980