ZLF645E0H2864G Zilog, ZLF645E0H2864G Datasheet - Page 133

• Manufacturer Part Number: ZLF645E0H2864G
• Description: IC MCU 64K FLASH 1K RAM 28-SSOP
• Manufacturer: Zilog
• Series: Crimzon™ ZLFr

Specifications of ZLF645E0H2864G

• 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: 24
• 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: 28-SSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Oscillator Type: -
• Other names: 269-4719

Table 65. Interrupt Request Register (IRQ)
PS026407-0408
Bit Position
{[4:3], [0]}
[2]
[1]
Bit
Field
Reset
R/W
Address
Bit Position
[7:6]
Interrupt Request Register
R/W
Value
Bit 7 and Bit 6 of the Interrupt Request register (see
edge detection of the interrupts for Port 3, bit 1 and Port 3, bit 2. The remaining bits (5
through 0) indicate the status of the interrupt. When an interrupt is serviced, the hardware
automatically clears the bit to 0. Writing 1 to any of these bits generates an interrupt if the
appropriate bits in the Interrupt Mask register are enabled. Writing 0 to these bits clears
the interrupts.
Value
Interrupt Edge
7
0
000
001
010
100
101
011
110
111
00
01
10
11
0
1
0
1
Description
Interrupt Edge
P31
P31
P31
P31
Description
Group Priority
Reserved
C > A > B
A > B > C
A > C > B
B > C > A
C > B > A
B > A > C
Reserved
Group B Priority (IRQ0, IRQ2)
IRQ2 > IRQ0
IRQ0 > IRQ2
Group C Priority (IRQ1, IRQ4)
IRQ1 > IRQ4
IRQ4 > IRQ1
R/W
↓
↓
↑
↑↓
6
0
P32
P32
P32
P32
↓
↑
↓
↑↓
IRQ5
R/W
Bank Independent: FAh; Linear: 0FAh
5
0
IRQ4
R/W
4
0
IRQ3
R/W
3
0
Table
IRQ2
ZLF645 Series Flash MCUs
R/W
2
0
65) are used to configure the
Product Specification
Interrupt Request Register
IRQ1
R/W
1
0
IRQ0
R/W
0
0
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