DF3048X16V Renesas Electronics America, DF3048X16V Datasheet - Page 185
![MCU 5V 128K,PB-FREE 100-TQFP](/photos/28/61/286123/100-tqfp__100-vqfp_sml.jpg)
DF3048X16V
Manufacturer Part Number
DF3048X16V
Description
MCU 5V 128K,PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3048X16V
Core Processor
H8/300H
Core Size
16-Bit
Speed
16MHz
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-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3048X16V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 185 of 907
- Download datasheet (6Mb)
7.1
The H8/3048 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 21.6, 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
Features as a Pseudo-Static RAM 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. 7.00 Sep 21, 2005 page 159 of 878
Section 7 Refresh Controller
REJ09B0259-0700
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