Z8F083ASJ020EG Zilog, Z8F083ASJ020EG Datasheet - Page 120

• Manufacturer Part Number: Z8F083ASJ020EG
• Description: IC ENCORE XP MCU FLASH 8K 28SOIC
• Manufacturer: Zilog
• Series: Encore!®r

Specifications of Z8F083ASJ020EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 23
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 28-SOIC (7.5mm Width)
• Data Bus Width: 8 bit
• Data Ram Size: 256 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 2
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: 770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU269-4672 - KIT DEVELOPMENT F083A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details
• Other names: 269-4558-5

Operation
PS026308-1207
Table 68
by setting the bit 7 of the Flash page select register to 1. When access is enabled, the Flash
information area is mapped into the program memory and overlays the 128-bytes at the
addresses FE00H to FE7FH. When the information area access is enabled, all reads from
these program memory addresses return the information area data rather than the program
memory data. Access to the Flash information area is read-only.
The trim bits are handled differently than the other Zilog Flash option bits. The trim bits
are the hybrid of the user option bits and the standard Zilog option bits. These trim bits
must be user accessible for reading at all times using external registers, regardless of the
state of bit 7 in the Flash page select register. Writes to the trim space change the value of
the option bit holding register, but does not affect the Flash bits, which remain as read-
only.
Table 68. Z8F083 Flash Memory Area Map
The Flash controller, programs and erases Flash memory. The Flash controller provides
the proper Flash controls and timing for byte programming, page erase, and mass erase of
Flash memory.
The Flash controller contains several protection mechanisms to prevent accidental
programming or erasure. These mechanism operate on the page, sector and full-memory
levels.
The flow chart in
following subsections provide details about the various operations (Lock, Unlock, Byte
Programming, Page Protect, Page Unprotect, Page Select Page Erase, and Mass Erase)
displayed in
FE00–FE3F
FE40–FE53
FE54–FE5F
FE60–FE7F
Program Memory Address (Hex)
describes the Flash information area. This 128-byte information area is accessed
Figure 16
Figure 16
on page 109.
on page 109 displays basic Flash controller operation. The
Zilog option bits
Part number
20-character ASCII alphanumeric code
Left justified and filled with FH
Zilog calibration data
Reserved
Function
Z8 Encore!
Product Specification
®
F083A Series
Flash Memory
108