HD64F3048F16 Renesas Electronics America, HD64F3048F16 Datasheet - Page 187

• Manufacturer Part Number: HD64F3048F16
• Description: IC H8 MCU FLASH 128K 100QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3048F16

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 8MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-QFP
• Package: 100PQFP
• Family Name: H8
• Maximum Speed: 16 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 16|32 Bit
• Number Of Programmable I/os: 70
• Interface Type: SCI
• On-chip Adc: 8-chx10-bit
• On-chip Dac: 2-chx8-bit
• Number Of Timers: 5
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

7.1
The H8/3048B Group has an on-chip refresh controller that enables direct connection of 16-bit-
wide DRAM or pseudo-static RAM (PSRAM).
DRAM or pseudo-static RAM can be directly connected to area 3 of the external address space.
A maximum 128 kbytes can be connected in modes 1, 2, and 5 (1-Mbyte modes). A maximum
2 Mbytes can be connected in modes 3, 4, and 6 (16-Mbyte modes).
Systems that do not need to refresh DRAM or pseudo-static RAM can use the refresh controller as
an 8-bit interval timer.
When the refresh controller is not used, it can be independently halted to conserve power. For
details see section 20.6, Module Standby Function.
7.1.1
The refresh controller can be used for one of three functions: DRAM refresh control, pseudo-static
RAM refresh control, or 8-bit interval timing. Features of the refresh controller are listed below.
Features as a DRAM Refresh Controller:
Enables direct connection of 16-bit-wide DRAM
Selection of 2CAS or 2WE mode
Selection of 8-bit or 9-bit column address multiplexing for DRAM address input
Examples:
CAS-before-RAS refresh control
Software-selectable refresh interval
Software-selectable self-refresh mode
Wait states can be inserted
1-Mbit DRAM: 8-bit row address
4-Mbit DRAM: 9-bit row address
4-Mbit DRAM: 10-bit row address
Features
Overview
Section 7 Refresh Controller
8-bit column address
9-bit column address
8-bit column address
Rev. 3.00 Sep 27, 2006 page 159 of 872
Section 7 Refresh Controller
REJ09B0325-0300