ZLP128ICE01ZEM Zilog, ZLP128ICE01ZEM Datasheet - Page 100

• Manufacturer Part Number: ZLP128ICE01ZEM
• Description: EMULATOR CRIMZON Z8 ZLP12840
• Manufacturer: Zilog

Specifications of ZLP128ICE01ZEM

• Interface Type: RS-232, Ethernet, USB
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 269-3829

PS024410-0108
Crystal 1 Oscillator Pin (XTAL1)
Crystal 2 Oscillator Pin (XTAL2)
Internal Clock Signals (SCLK and TCLK)
resonator or crystal is used as a clock source then Stop Mode Recovery delay needs to be
selected (bit 5 of SMR = 1).
For both resonator and crystal oscillator, the oscillation ground must go directly to the
ground pin of the microcontroller. The oscillation ground must use the shortest distance
from the microcontroller ground pin and it must be isolated from other connections.
The Crystal 1 Oscillator time-based input pin connects a parallel-resonant crystal or
ceramic resonator to the on-chip oscillator input. Additionally, an optional external single-
phase clock can be connected to the on-chip oscillator input.
The Crystal 2 Oscillator time-based output pin connects a parallel-resonant, crystal, or
ceramic resonant to the on-chip oscillator output.
The CPU and internal peripherals are driven by the internal SCLK signal during normal
execution. During HALT mode, the interrupt logic is driven by the internal TCLK signal.
These signals are produced by dividing the on-chip oscillator signal by a factor of two, and
optionally by applying an additional divide-by-16 prescaler enabled in register bit SMR[0]
(see
Selecting the divide-by-16 prescaler reduces device power draw during normal operation
and HALT mode. The prescaler is disabled by a Power-On Reset or Stop Mode Recovery.
Table 48
on page 102 and
P R E L I M I N A R Y
OSC
Figure 33. SCLK/TCLK Circuit
/16
/2
Figure
33).
SMR[0]
0
1
SCLK
TCLK
Product Specification
Clock
94