HD6412350F20 Renesas Electronics America, HD6412350F20 Datasheet - Page 29

• Manufacturer Part Number: HD6412350F20
• Description: IC H8S MPU ROMLESS 5V 128QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2300r

Specifications of HD6412350F20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SCI, SmartCard
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 87
• Program Memory Type: ROMless
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 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: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

Section 1 CPU
Free area
SP (ER7)
Stack area
Figure 1.9 Stack
1.4.3
Control Registers
The control registers are the 24-bit program counter (PC), 8-bit extended control register (EXR),
8-bit condition-code register (CCR), and 64-bit multiply-accumulate register (MAC: H8S/2600
CPU only).
(1) Program Counter (PC)
This 24-bit counter indicates the address of the next instruction the CPU will execute. The length
of all CPU instructions is 16 bits (one word) or a multiple of 16 bits, so the least significant PC bit
is ignored. When an instruction is fetched, the least significant PC bit is regarded as 0.
(2) Extended Control Register (EXR)
This 8-bit register contains the trace bit (T) and three interrupt mask bits (I2 to I0).
Bit 7—Trace Bit (T): Selects trace mode. When this bit is cleared to 0, instructions are executed
in sequence. When this bit is set to 1, a trace exception is generated each time an instruction is
executed.
Bits 6 to 3—Reserved: These bits are reserved, always read as 1.
Bits 2 to 0—Interrupt Mask Bits (I2 to I0): These bits designate the interrupt mask level (0 to
7). For details refer to the relevant microcontroller hardware manual.
Rev. 4.00 Feb 24, 2006 page 13 of 322
REJ09B0139-0400