DF61654N50FTV Renesas Electronics America, DF61654N50FTV Datasheet - Page 114

• Manufacturer Part Number: DF61654N50FTV
• Description: IC H8SX/1654 MCU FLASH 120TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8SX/1600r

Specifications of DF61654N50FTV

• Core Processor: H8SX
• Core Size: 32-Bit
• Speed: 50MHz
• Connectivity: I²C, IrDA, SCI, SmartCard, USB
• Peripherals: DMA, PWM, WDT
• Number Of I /o: 75
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 120-TQFP, 120-VQFP
• For Use With: HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)3DK1657 - DEV EVAL KIT FOR H8SX/1657
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 3 MCU Operating Modes
3.2.2
SYSCR controls MAC saturation operation, selects bus width mode for instruction fetch, sets
external bus mode, enables/disables the on-chip RAM, and selects the DTC address mode.
Rev.1.00 Sep. 08, 2005 Page 64 of 966
REJ09B0219-0100
Bit
15
14
13
12
11
Bit
Bit Name
Initial Value
R/W
Bit
Bit Name
Initial Value
R/W
Note: * The initial value depends on the startup mode.
Bit Name


MACS

FETCHMD 0
System Control Register (SYSCR)
R/W
R/W
15
1
7
0
Initial
Value
1
1
0
1
R/W
R/W
14
1
6
0
R/W
R/W
R/W
R/W
R/W
R/W
MACS
R/W
R/W
13
0
5
0
Descriptions
Reserved
These bits are always read as 1. The write value should
always be 1.
Selects either saturation operation or non-saturation
operation for the MAC instruction.
0: MAC instruction is non-saturation operation
1: MAC instruction is saturation operation
Reserved
This bit is always read as 1. The write value should
always be 1.
Instruction Fetch Mode Select
This LSI can prefetch an instruction in units of 16 bits or
32 bits. Select the bus width for instruction fetch
depending on the used memory for the storage of
programs*
0: 32-bit mode
1: 16-bit mode
MAC Saturation Operation Control
R/W
R/W
12
1
4
0
1
.
FETCHMD
R/W
R/W
11
3
0
0
Undefined*
R/W
10
R
2
0
Undefined*
DTCMD
EXPE
R/W
R/W
9
1
1
RAME
R/W
R/W
8
1
0
1