Z8F2480AN020SG Zilog, Z8F2480AN020SG Datasheet - Page 297
Z8F2480AN020SG
Manufacturer Part Number
Z8F2480AN020SG
Description
MCU 8BIT 24KB FLASH 44LQFP
Manufacturer
Zilog
Series
Encore!® XP®r
Specifications of Z8F2480AN020SG
Core Processor
Z8
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, IrDA, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LED, LVD, POR, PWM, Temp Sensor, WDT
Number Of I /o
37
Program Memory Size
24KB (24K x 8)
Program Memory Type
FLASH
Ram Size
3K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-LQFP
Processor Series
Z8F248x
Core
eZ8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
37
Number Of Timers
3
Maximum Operating Temperature
+ 70 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
0 C
On-chip Adc
10 bit, 8 Channel
For Use With
770-1002 - ISP 4PORT ZILOG Z8 ENCORE! MCU269-4643 - KIT DEV Z8 ENCORE XP 28-PIN269-4630 - DEV KIT FOR Z8 ENCORE 8K/4K269-4629 - KIT DEV Z8 ENCORE XP 28-PIN269-4628 - KIT DEV Z8 ENCORE XP 8-PIN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Other names
269-4676
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z8F2480AN020SG
Manufacturer:
Zilog
Quantity:
85
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PS025011-1010
Table 160. Read Status Byte
BITS
FIELD
DEFAULT
VALUE
Note:
Byte Read
To read a byte from the NVDS array, user code must first push the address onto the stack.
User code issues a
the return from the sub-routine, the read byte resides in working register R0, and the read
status byte resides in working register R1. The bit fields of this status byte are defined in
Table
The read routine uses 16 bytes of stack space in addition to the 1 byte of address pushed by
you. Sufficient memory must be available for this stack usage. Because of the Flash mem-
ory architecture, NVDS reads exhibit a non-uniform execution time. A read operation
takes between 71 s and 258 s (assuming a 20 MHz system clock). Slower system clock
speeds result in proportionally higher execution times.
NVDS byte reads from invalid addresses (those exceeding the NVDS array size) return
0xff. Illegal read operations have a 6 s execution time. The status byte returned by the
NVDS read routine is zero for successful read. If the status byte is non-zero, there is
a corrupted value in the NVDS array at the location being read. In this case, the value
returned in R0 is the byte most recently written to the array that does not have an error.
When the NVDS array size is 256 bytes, there is no address exceeding the size, the
bit is of no use.
7
0
Reserved—Must be 0.
DE—Data Error
When reading a NVDS address, if an error is found in the latest data corresponding to
this NVDS address, this bit is set to 1. NVDS source code steps forward until finding
a valid data at this address.
FE—Flash Error
If Flash error is detected, this bit is set to 1.
IGADDR—Illegal address
When NVDS byte reads from invalid addresses (those exceeding the NVDS array
size) occur, this bit is set to 1.
160. Also, the user code should pop the address byte off the stack.
Reserved
6
0
CALL
instruction to the address of the byte-read routine
5
0
P R E L I M I N A R Y
DE
4
0
Reserved
3
0
Z8 Encore! XP
FE
2
0
Product Specification
Non-Volatile Data Storage
IGADDR Reserved
0
1
®
F1680 Series
(0x4000
IGADDR
0
0
). At
283
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