z86e54 ZiLOG Semiconductor, z86e54 Datasheet - Page 45

• Manufacturer Part Number: z86e54
• Description: Z8 512 Byte Otp Mcu
• Manufacturer: ZiLOG Semiconductor

PS020102-1003
OTP Option Bit Description
One-Time Programmable EPROM option bits for the device are described in this
section. The Z86E54 must be power-cycled to fully implement the selected option
after programming.
Low-EMI Emission. The Low EMI option bit, when programmed, enables the Z8
to operate in a low-EMI emission (low-noise) mode. Use of this feature results in:
•
•
•
•
RC Oscillator. The RC Oscillator option bit, when programmed, enables the inter-
nal RC oscillator to connect to the XTAL2 and XTAL1 pins while disabling the
internal crystal oscillator to XTAL2 and XTAL1.
(Volts)
All pre-driver slew rates are typically reduced to 10 ns
Internal SCLK /TCLK operation limited to a maximum of 4 MHz–250 ns cycle time
Output drivers typically exhibit resistances of 200 ohms
Oscillator divide-by-two circuitry eliminated
V
3.2
3.1
3.0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.7
1.6
Figure 19.Typical Auto Reset Voltage (V
CC
-40°C -20°C
0°C
20°C
40°C
60°C 80°C
LV
) vs. Temperature
100°C
Z8
Temp
®
512 Byte OTP MCU
Z86E54
39