HD64F2638F20J Renesas Electronics America, HD64F2638F20J Datasheet - Page 168
Manufacturer Part Number
IC H8S MCU FLASH 256K 128-QFP
Renesas Electronics America
Specifications of HD64F2638F20J
CAN, SCI, SmartCard
Motor Control PWM, POR, PWM, WDT
Number Of I /o
Program Memory Size
256KB (256K x 8)
Program Memory Type
16K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
A/D 12x10b; D/A 2x8b
-40°C ~ 85°C
Package / Case
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Section 2 Instruction Descriptions
MULXS (MULtiply eXtend as Signed)
MULXS.W Rs, ERd
This instruction multiplies the lower 16 bits of a 32-bit register ERd (destination operand) by the
contents of a 16-bit register Rs (source operand) as signed data and stores the result in the 32-bit
register ERd. Rs can be the upper part (Ed) or lower part (Rd) of ERd. The operation performed is
ERd: ER0 to ER7
Operand Format and Number of States Required for Execution
Note: * The number of states in the H8S/2000 CPU is 21.
Rev. 4.00 Feb 24, 2006 page 152 of 322
R0 to R7, E0 to E7
A maximum of three additional states are required for execution of this instruction within three states
after execution of a MAC instruction. For example, if there is a one-state instruction (such as NOP)
between the MAC instruction and this instruction, this instruction will be two states longer.
The number of states may differ depending on the product. For details, refer to the relevant
microcontroller hardware manual of the product in question.
32 bits signed multiplication.
H: Previous value remains unchanged.
N: Set to 1 if the result is negative; otherwise
Z: Set to 1 if the result is zero; otherwise
V: Previous value remains unchanged.
C: Previous value remains unchanged.
cleared to 0.
cleared to 0.