DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 178
DF3052BX25V
Manufacturer Part Number
DF3052BX25V
Description
MCU 5V 512K 100-TQFP
Manufacturer
Renesas Electronics America
Series
H8® H8/300Hr
Specifications of DF3052BX25V
Core Processor
H8/300H
Core Size
16-Bit
Speed
25MHz
Connectivity
SCI, SmartCard
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
70
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
8K 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:
DF3052BX25V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 7 Refresh Controller
7.1.3
Table 7.1 summarizes the refresh controller’s input/output pins.
Table 7.1
Pin
RFSH
HWR
LWR
RD
CS
7.1.4
Table 7.2 summarizes the refresh controller’s registers.
Table 7.2
Address *
H'FFAC
H'FFAD
H'FFAE
H'FFAF
Note: * Lower 16 bits of the address.
Rev. 3.00 Mar 21, 2006 page 148 of 814
REJ09B0302-0300
3
Name
Refresh
Upper write/upper column
address strobe
Lower write/lower column
address strobe
Column address strobe/
write enable
Row address strobe
Pin Configuration
Register Configuration
Refresh Controller Pins
Refresh Controller Registers
Name
Refresh time constant register
Refresh control register
Refresh timer control/status register
Refresh timer counter
Signal
Abbr.
RFSH
UW/UCAS
LW/LCAS
CAS/WE
RAS
I/O
Output
Output
Output
Output
Output
Abbreviation
RFSHCR
RTMCSR
RTCNT
RTCOR
Function
Goes low during refresh cycles;
used to refresh DRAM and PSRAM
Connects to the UW pin of 2WE
DRAM or UCAS pin of 2CAS DRAM
Connects to the LW pin of 2WE
DRAM or LCAS pin of 2CAS DRAM
Connects to the CAS pin of 2WE
DRAM or WE pin of 2CAS DRAM
Connects to the RAS pin of DRAM
R/W
R/W
R/W
R/W
R/W
H'07
H'00
Initial Value
H'02
H'FF
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