DF3052BX25V Renesas Electronics America, DF3052BX25V Datasheet - Page 90

• 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: -

Section 3 MCU Operating Modes
Modes 5 and 6 are externally expanded modes that enable access to external memory and
peripheral devices and also enable access to the on-chip ROM. Mode 5 supports a maximum
address space of 1 Mbyte. Mode 6 supports a maximum address space of 16 Mbytes.
Mode 7 is a single-chip mode that operates using the on-chip ROM, RAM, and Internal I/O
registers, and makes all I/O ports available. Mode 7 supports a 1-Mbyte address space.
The H8/3052BF can be used only in modes 1 to 7. The inputs at the mode pins must select one of
these seven modes. The inputs at the mode pins must not be changed during operation.
3.1.2
The H8/3052BF has a mode control register (MDCR) that indicates the inputs at the mode pins
(MD
Table 3.2
Address *
H'FFF1
H'FFF2
Note: * The lower 16 bits of the address are indicated.
3.2
MDCR is an 8-bit read-only register that indicates the current operating mode of the H8/3052BF.
Bit
Initial value
Read/Write
Note:
Bits 7 and 6—Reserved: Read-only bits, always read as 1.
Bits 5 to 3—Reserved: Read-only bits, always read as 0.
Rev. 3.00 Mar 21, 2006 page 60 of 814
REJ09B0302-0300
2
*
to MD
Determined by pins MD to MD .
Register Configuration
Mode Control Register (MDCR)
0
Registers
), and a system control register (SYSCR). Table 3.2 summarizes these registers.
Name
Mode control register
System control register
Reserved bits
—
—
7
1
—
—
6
1
2
—
—
5
0
0
Reserved bits
SYSCR
Abbreviation
MDCR
—
—
4
0
—
—
3
0
MDS2
Mode select 2 to 0
Bits indicating the current
operating mode
R/W
R
R/W
—
R
2
*
MDS1
—
R
1
Initial Value
Undetermined
H'0B
*
MDS0
—
R
0
*