z86e54 ZiLOG Semiconductor, z86e54 Datasheet - Page 27

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

Pin Functions
PS020102-1003
Low-EMI Mode
Software Work Around on the Z86CCP01ZEM Emulator to Emulate
Low EMI Mode
EPROM Mode
Low-EMI Emission
The device can be programmed to operate in a LOW EMI EMISSION mode by
means of a OTP bit option. Use of this feature results in:
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•
•
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The LOW EMI mode is a OTP programmable option to be selected by the cus-
tomer at the time of Device Programming.
D7–D0 Data Bus. Data can be read from, or written to, the EPROM through this
data bus.
V
6.4V during other modes (PROGRAM, PROGRAM VERIFY, etc.).
CE Chip Enable (active Low). This pin is active during EPROM READ mode,
PROGRAM mode, and PROGRAM VERIFY mode.
OE Output Enable (active Low). This pin drives the Data Bus direction. When
this pin is Low, the data bus is output. When High, the data bus is input.This pin
must toggle for each data output read.
EPM EPROM Program Mode. This pin controls the selection of EPROM opera-
tion modes by applying different voltages.
V
CC
PP
All pre-driver slew rates reduced to 10 ns typical
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
SWFIXLEMI: PUSH RP
LD RP, #0Fh
LD R12, #00110110B
LD RO,#11010111B
POP RP
Program Voltage. This pin supplies the program voltage.
Power Supply. It is typically 5V during all EPROM Read Mode and typically
Z8
®
512 Byte OTP MCU
Z86E54
21