D12321VF20V Renesas Electronics America, D12321VF20V Datasheet - Page 112

• Manufacturer Part Number: D12321VF20V
• Description: IC H8S/2321 MCU ROMLESS 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of D12321VF20V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 86
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 128-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

Section 3 MCU Operating Modes
3.1.3
The H8S/2329 Group and H8S/2328 Group have a mode control register (MDCR) that indicates
the inputs at the mode pins (MD
control register 2 (SYSCR2) *
registers.
Table 3.3
Name
Mode control register
System control register
System control register 2 *
Notes: 1. Lower 16 bits of the address.
3.2
3.2.1
Note: * Determined by pins MD
MDCR is an 8-bit read-only register that indicates the current operating mode of the H8S/2329
Group and H8S/2328 Group chip.
Bit 7—Reserved: This bit is always read as 1, and cannot be modified.
Bits 6 to 3—Reserved: These bits are always read as 0, and cannot be modified.
Bits 2 to 0—Mode Select 2 to 0 (MDS2 to MDS0): These bits indicate the input levels at pins
MD
MDS2 to MDS0 are read-only bits, and cannot be written to. The mode pin (MD
levels are latched into these bits when MDCR is read. These latches are canceled by a reset.
Rev.6.00 Sep. 27, 2007 Page 80 of 1268
REJ09B0220-0600
Bit
Initial value :
R/W
2
to MD
2. The SYSCR2 register can only be used in the F-ZTAT versions. In the mask ROM and
Register Configuration
Register Descriptions
Mode Control Register (MDCR)
ROMless versions this register will return an undefined value if read, and cannot be
modified.
0
Registers
(the current operating mode). Bits MDS2 to MDS0 correspond to pins MD
:
:
—
—
7
1
2
2
—
—
2
6
0
that control the operation of the chip. Table 3.3 summarizes these
Abbreviation
MDCR
SYSCR
SYSCR2
2
to MD
to MD
0
.
0
—
—
), and a system control register (SYSCR) and a system
5
0
R/W
R/W
R
R/W
—
—
4
0
—
—
3
0
Initial Value
Undefined
H'01
H'00
MDS2
— *
R
2
MDS1
2
Address *
H'FF3B
H'FF39
H'FF42
— *
to MD
R
1
2
0
) input
to MD
MDS0
1
— *
R
0
0
.