DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 584
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 17 RAM
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized at the rising edge of the input at the RES pin. It is not initialized in software standby
mode.
17.3
When the RAME bit is set to 1, the on-chip RAM is enabled. Accesses to addresses H'FDF10 to
H'FFF0F in the H8/3052BF in modes 1, 2, 5, and 7, addresses H'FFDF10 to H'FFFF0F in the
H8/3052BF in modes 3, 4, and 6 are directed to the on-chip RAM. In modes 1 to 6 (expanded
modes), when the RAME bit is cleared to 0, the external 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. 3.00 Mar 21, 2006 page 554 of 814
REJ09B0302-0300
Bit 0: RAME
0
1
Operation
Description
On-chip RAM is disabled
On-chip RAM is enabled
(Initial value)
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