DF61657CN35FTV Renesas Electronics America, DF61657CN35FTV Datasheet - Page 90

• Manufacturer Part Number: DF61657CN35FTV
• Description: IC H8SX/1657 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61657CN35FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 35MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 82
• Program Memory Size: 768KB (768K x 8)
• Program Memory Type: FLASH
• Ram Size: 24K 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: 120-TQFP, 120-VQFP
• For Use With: 3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 3 MCU Operating Modes
Modes 4 to 6 are external extended modes, in which the external memory and devices can be
accessed. In the external extended modes, the external address space can be designated as 8-bit or
16-bit address space for each area by the bus controller after starting program execution.
If 16-bit address space is designated for any one area, it is called the 16-bit bus widths mode. If 8-
bit address space is designated for all areas, it is called the 8-bit bus width mode.
3.2
The following registers are related to the operating mode setting.
• Mode control register (MDCR)
• System control register (SYSCR)
3.2.1
MDCR indicates the current operating mode. When MDCR is read from, the states of signals
MD2 to MD0 are latched. This latch is canceled by a reset.
Rev. 2.00 Jun. 28, 2007 Page 64 of 864
REJ09B0341-0200
Note: * Determined by pins MD2 to MD0.
Bit
Bit Name
Initial Value
R/W
Bit
Bit Name
Initial Value
R/W
Register Descriptions
Mode Control Register (MDCR)
15


R
R
0
7
0
14


R
R
1
6
1
13


R
R
0
5
0
12


R
R
1
4
1
Undefined*
Undefined*
MDS3
11

R
R
3
Undefined*
Undefined*
MDS2
10

R
R
2
Undefined*
Undefined*
MDS1

R
R
9
1
Undefined*
Undefined*
MDS0

R
R
8
0