DF3048BVX25V Renesas Electronics America, DF3048BVX25V Datasheet - Page 202
DF3048BVX25V
Manufacturer Part Number
DF3048BVX25V
Description
MCU 3/5V 128K PB-FREE 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3048BVX25V
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
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
4K 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
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
DF3048BVX25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 7 Refresh Controller
2CAS
The CAS/WE bit in RFSHCR can select two control modes for 16-bit-wide DRAM: one using
UCAS and LCAS; the other using UW and LW. These DRAM pins correspond to H8/3048B
Group pins as shown in table 7.6.
Table 7.6
H8/3048B Group Pin
HWR
LWR
RD
CS
Figure 7.5 (1) shows the interface timing for 2WE DRAM. Figure 7.5 (2) shows the interface
timing for 2CAS DRAM.
Rev. 3.00 Sep 27, 2006 page 174 of 872
REJ09B0325-0300
CAS
CAS and 2WE
CAS
3
Address
bus
CS
(RAS)
RD
(CAS)
HWR
(UW)
LWR
(LW)
RFSH
AS
Note: * 16-bit access
3
WE
WE
WE Modes
DRAM Pins and H8/3048B Group Pins
Figure 7.5(1) DRAM Control Signal Output Timing (2WE
Row
Read cycle
UW
CAS/WE
LW
CAS
RAS
Column
WE
WE
WE = 0 (2WE
Row
WE
WE
WE Mode)
Write cycle
Column
*
DRAM Pin
CAS/WE
UCAS
LCAS
WE
RAS
Area 3 top address
WE
WE
WE = 1 (2CAS
Refresh cycle
WE Mode)
WE
WE
CAS
CAS Mode)
CAS
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