Features: • 28-Pin DIP, 28-Pin SOIC and PLCC Packages (C34,C35, C36)
• 40-Pin DIP, 44-Pin PLCC and QFP Packages (C44,C45, C46)
• 3.0- to 5.5-Volt Operating Range
• Clock Free Watch-Dog Timer (WDT) Reset
• Operating Temperature Ranges:Standard: 0 to 70 Extended: 40 to +105
• Expanded Register File (ERF)
• Full-Duplex UART (ASCI)
• Dedicated 16-Bit Baud Rate Generator
• 32 Input/Output Lines (C44/C45/C46)24 Input/Output Lines (C34/C35/C36)
• Vectored, Prioritized Interrupts with Programmable Polarity
• Two Analog Comparators
• Two Programmable 8-Bit Counter/Timers, Each with Two 6-Bit Programmable Prescaler
• Watch-Dog Timer (WDT)/Power-On Reset (POR)
• On-Chip Oscillator that Accepts a Crystal, Ceramic Resonator,LC, RC, or External Clock
• RAM and ROM Protect
• Optional 32-kHz OscillatorPinout
Specifications
| Parameter |
Min |
Max |
Units |
Notes |
| Ambient Temperature under Bias |
-40 |
+105 |
C |
|
| Storage Temperature |
-65 |
+150 |
C |
|
| Voltage on any Pin with Respect to VSS |
-0.6 |
+7 |
V |
1 |
| Voltage on VDD Pin with Respect to VSS |
-0.3 |
+7 |
V |
|
| Voltage on XTAL1 and RESET Pins with Respect to VSS |
-0.6 |
VDD+1 |
V |
2 |
| Total Power Dissipation |
|
1.21 |
W |
|
| Maximum Allowable Current out of VSS |
|
220 |
mA |
|
| Maximum Allowable Current into VDD |
|
180 |
mA |
|
| Maximum Allowable Current into an Input Pin |
-600 |
+600 |
A |
3 |
| Maximum Allowable Current into an Open-Drain Pin |
-600 |
+600 |
A |
4 |
| Maximum Allowable Output Current Sunk by Any I/O Pin |
|
25 |
mA |
|
| Maximum Allowable Output Current Sourced by Any I/O Pin |
|
25 |
mA |
|
Notes:
1. Applies to all pins except XTAL pins and where otherwise noted.
2. There is no input protection diode from pin to VDD and current into pin is limited to ±600 A.
3. Excludes XTAL pins.
4. Device pin is not at an output Low state.DescriptionZiLOG's Z8® MCU single-chip family now includes the Z86C44/C45/C46 product line, featuring enhanced wake-up circuitry, programmable Watch-Dog Timers(WDT), and low-noise/EMI options. Each of the new enhancements to the Z8 offer a more efficient, cost-effective design and provide the user with increased design flexibility over the standard Z8 microcontroller core. The low-power consumption CMOS microcontroller offers fast execution,efficient use of memory, sophisticated interrupts, input/output bit manipulation capabilities, and easy hardware/software system expansion.
The Z8 subfamily features an Expanded Register File (ERF) to allow access to register-mapped peripheral and I/O circuits. Four basic address spaces are available to support this wide range of configurations: Program Memory, Register File, Data Memory, and ERF. The Z86C44/C45/C46 Register File is composed of 236/237 bytes of general-purpose registers, four I/O port registers, and 15 control and status registers. The ERF consists of twelve control registers.
For applications of Z86C44/C45/C46 demanding powerful I/O capabilities, the Z86C34/C35/C36 offers 24 pins, and the Z86C44/C45/C46 offers 32 pins dedicated to input and output. These lines are configurable under software control to provide timing, status signals, parallel I/O with or without handshake, and address/data bus for interfacing external memory.
To unburden the system from coping with real-time tasks such as counting/timing and data communication, the Z8 offer two on-chip counter/timers with a large number of user-selectable modes. With ROM/ROMless selectivity, the Z86C44/C45/C46 provide both external memory and preprogrammed ROM,which enables this Z8® MCU to be used in high-volume applications,or where code flexibility is required.
Z86C44 Data Sheet
