Z8F4822AR020EC Zilog, Z8F4822AR020EC Datasheet - Page 3

• Manufacturer Part Number: Z8F4822AR020EC
• Description: IC ENCORE MCU FLASH 48K 64LQFP
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F4822AR020EC

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 46
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Other names: 269-3289

Table 2. Z8 Encore! XP F64XX Series Errata Date Coded Prior to 0334 (Continued)
UP006010-0508
Sl
No. Summary
4
5
6
7
8
9
10
UART address com-
pare function does
not work.
UART baud rate
generator cannot be
used as simple
timer.
Unlocking the Flash
controller allows pro-
gram and erase
operations on all
Flash pages.
Setting bits in the
Flash sector protect
register to 1 does
not lock sectors.
Watchdog Timer
cannot be disabled
in STOP mode.
Watchdog Timer
oscillator frequency
is out of specifica-
tion.
Operating currents.
Description
Setting bit 7 (MPMD[1]) of the UART control 1 register to 1 does not produce
the desired effect of enabling the UART address compare and associated
interrupt functionality.
Workaround
Leave MPMD[1] in its reset state of 0.
Setting BRGCTL (bit 2 of the UART Control 1 register) to 1 when the UART
receiver is disabled does not enable UART baud rate generator interrupt.
Thus, the UART baud rate generator cannot be used as a simple timer.
Workaround
Use one of the four standard timers or the baud rate generators in the SPI or
I
During the Flash controller unlock sequence, the specification indicates that a
second write to the Flash Page Select register is required (step 5 of the
sequence) to unlock the Flash controller for the selected Flash page. The
Flash controller unlocks for all Flash pages once the step 1 to step 4 of the
unlock sequence are complete.
Workaround
None
Writing bits in the Flash sector protect register to 1 fails to prevent program
and erase operations on the selected Flash memory sector.
Workaround
None
The Watchdog Timer and its associated internal RC oscillator cannot be dis-
abled in STOP mode.
Workaround
None
The typical Watchdog Timer internal oscillator frequency is 50 kHz rather than
the currently specified 10 kHz. This frequency can result in WDT time-out val-
ues that are less than expected.
Workaround
Increase the WDT reload value by a factor of 5 to compensate for the fre-
quency error.
Operating currents in the various mode (NORMAL, HALT, and STOP) may be
higher than typical values.
Workaround
None
2
C blocks to perform the desired timing operations.
Errata for Z8 Encore! XP
®
F64XX Series
Page 3 of 5