DF2145BVTE10V Renesas Electronics America, DF2145BVTE10V Datasheet - Page 28

• Manufacturer Part Number: DF2145BVTE10V
• Description: IC H8S MCU FLASH 256K 100TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2145BVTE10V

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 10MHz
• Connectivity: Host Interface (LPC), I²C, IrDA, SCI, X-Bus
• Peripherals: PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: 100-TQFP
• For Use With: 3DK2166 - DEV EVAL KIT H8S/2166
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: HD64F2145BVTE10V

Section 1 CPU
1.4.2
The CPUs have eight 32-bit general registers. These general registers are all functionally alike and
can be used as both address registers and data registers. When a general register is used as a data
register, it can be accessed as a 32-bit, 16-bit, or 8-bit register. When the general registers are used
as 32-bit registers or address registers, they are designated by the letters ER (ER0 to ER7).
The ER registers divide into 16-bit general registers designated by the letters E (E0 to E7) and R
(R0 to R7). These registers are functionally equivalent, providing a maximum sixteen 16-bit
registers. The E registers (E0 to E7) are also referred to as extended registers.
The R registers divide into 8-bit general registers designated by the letters RH (R0H to R7H) and
RL (R0L to R7L). These registers are functionally equivalent, providing a maximum sixteen 8-bit
registers.
Figure 1.8 illustrates the usage of the general registers. The usage of each register can be selected
independently.
General register ER7 has the function of stack pointer (SP) in addition to its general-register
function, and is used implicitly in exception handling and subroutine calls. Figure 1.9 shows the
stack.
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REJ09B0139-0400
• Address registers
• 32-bit registers
(ER0 to ER7)
ER registers
General Registers
Figure 1.8 Usage of General Registers
E registers (extended registers)
• 16-bit registers
R registers
(E0 to E7)
(R0 to R7)
• 8-bit registers
(R0H to R7H)
(R0L to R7L)
RH registers
RL registers