ZLF645E0Q2064G Zilog, ZLF645E0Q2064G Datasheet - Page 132
ZLF645E0Q2064G
Manufacturer Part Number
ZLF645E0Q2064G
Description
IC MCU 64K FLASH 1K RAM 20-QFN
Manufacturer
Zilog
Series
Crimzon™ ZLFr
Specifications of ZLF645E0Q2064G
Core Processor
Z8 LXMC
Core Size
8-Bit
Speed
8MHz
Connectivity
UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, WDT
Number Of I /o
16
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.9 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Package / Case
20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Oscillator Type
-
Other names
269-4723
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ZLF645E0Q2064G
Manufacturer:
Maxim
Quantity:
28
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Table 64. Interrupt Priority Register (IPR)
PS026407-0408
Bit
Field
Reset
R/W
Address
Bit Position
[7:6]
[5]
Interrupt Priority Register
Reserved
X
7
Programming bits for the Interrupt Edge Select are located in the IRQ register (R250),
bit 6 and bit 7.
Table 63. Interrupt Request Register
The Interrupt Priority register (see
priority. Interrupts are divided into three groups of two—Group A, Group B, and Group C.
IPR bits 4, 3, and 0 determine which interrupt group has priority. For example, if interrupts
IRQ5, IRQ1, and IRQ0 occur simultaneously when IPR[4:3,0]=001b, the interrupts are
serviced in the following order: IRQ1, IRQ0, IRQ5.
IPR bits 5, 2, and 1 determine which interrupt within each group has higher priority.
Value
IRQ Bit
7
0
0
1
1
Note: F = Falling Edge; R = Rising Edge.
—
0
1
—
X
6
Description
Reserved
Reads are undefined; writes must be 00b.
Group A Priority (IRQ3, IRQ5)
IRQ5 > IRQ3
IRQ3 > IRQ5
6
0
1
0
1
Group A
Priority
Table 63
W
X
5
Interrupt Edge
IRQ2 (P31)
F
F
R
R/F
Bank Independent: F9h; Linear: 0F9h
provides the configuration.
Group Priority
X
4
[2:1]
W
Table
IRQ0 (P32)
F
R
F
R/F
X
3
64) defines which interrupt holds the highest
Group B
Priority
W
X
2
ZLF645 Series Flash MCUs
Group C
Priority
W
X
1
Product Specification
Interrupt Priority Register
Group Priority
[0]
W
X
0
124
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