HMS9XC8032 View Datasheet(PDF) - Hynix Semiconductor
Part Name
Description
Manufacturer
HMS9XC8032 Datasheet PDF : 157 Pages
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HMS91C8032/97C8032
MNEMONIC
JZ rel
JNZ rel
DJNZ <byte>,rel
CJNE A,<byte>,rel
CJNE <byte>,#data,rel
OPERATION
Jump if A = 0
Jump if A ≠ 0
Decrement and jump if not Zero
Jump if A ≠ <byte>
Jump if <byte> ≠ #data
ADDRESSING MODES
DIR
IND
REG
IMM
Accumulator only
Accumulator only
X
X
X
X
X
X
Table 3-7 Conditional Jumps in HMS9XC8032 Devices
Every time the loop was executed, R1 was decremented, and the
looping was to continue until the R1 data reached 2AH.
Another application of this instruction is in "greater than, less
Quartz crystal
than" comparisons. The two bytes in the operand field are taken
or ceramic
resonator
C1
as unsigned integers. If the first is less than the second, then the
Carry bit is set (1). If the first is greater than or equal to the sec-
C2
ond, then the Carry bit is cleared
XXoTuAtL2(XTout)
XXiTnA(LX1Tin)
3.10 CPU Timing
All HMS9XC8032 microcontrollers have an on-chip oscillator
which can be used if desired as the clock source for the CPU. To
use the on-chip oscillator, connect a crystal or ceramic resonator
between the Xout(XTout) and Xin(XTin) pins of the microcon-
troller, and capacitors to ground as shown in Figure 3-4 Using the
On-Chip Oscillator.
Vss
Figure 3-4 sing the On-Chip Oscillator
Examples of how to drive the clock with an external oscillator are
shown in Figure 3-5. In the CMOS devices (HMS9XC8032, etc.),
the signal at the Xout(XTout) pin drives the internal clock gener-
ator. The internal clock generator defines the sequence of states
that make up the HMS9XC8032 machine cycle.
Main Clock
Xin, Xout : 7.2 MHz
Sub Clock
XTin, XTout : 32.768 KHz
EXTERNAL
OSCILLATOR
SIGNAL
CMOS GATE
DTS3
NC
XXoTAuLt1 (XTout)
XXiTnAL(2XTin)
Vss
Figure 3-5 Using an External Clock
NOV., 2001 Ver 1.02
15
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