Z85C3008VSG Zilog, Z85C3008VSG Datasheet - Page 35
Z85C3008VSG
Manufacturer Part Number
Z85C3008VSG
Description
IC 8MHZ Z8500 CMOS SCC 44-PLCC
Manufacturer
Zilog
Series
SCCr
Specifications of Z85C3008VSG
Processor Type
Z80
Features
Error Detection and Multiprotocol Support
Speed
8MHz
Voltage
5V
Mounting Type
Surface Mount
Package / Case
44-LCC (J-Lead)
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Cpu Speed
8MHz
Digital Ic Case Style
LCC
No. Of Pins
44
Supply Voltage Range
5V
Operating Temperature Range
0°C To +70°C
Svhc
No SVHC (18-Jun-2010)
Base Number
85
Rohs Compliant
Yes
Clock Frequency
8MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
269-3932
Z85C3008VSG
Z85C3008VSG
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
Z85C3008VSG
Manufacturer:
Zilog
Quantity:
800
Company:
Part Number:
Z85C3008VSG
Manufacturer:
MAX
Quantity:
74
- Current page: 35 of 317
- Download datasheet (4Mb)
SCC™/ESCC™ User’s Manual
Interfacing the SCC/ESCC
2.4 INTERFACE PROGRAMMING (Continued)
2.4.2 Polling
This is the simplest mode to implement. The software must
poll the SCC to determine when data is to be input or out-
put from the SCC. In this mode, MIE (WR9, bit 3), and
Wait/DMA Request Enable (WR1, bit 7) are both reset to 0
to disable any interrupt or DMA requests. The software
must then poll RR0 to determine the status of the receive
buffer, transmit buffer and external status.
During a polling sequence, the status of Read Register 0
is examined in each channel. This register indicates
whether or not a receive or transmit data transfer is need-
ed and whether or not any special conditions are present,
e.g., errors.
This method of I/O transfer avoids interrupts and, conse-
quently, all interrupt functions should be disabled. With no
interrupts enabled, this mode of operation must initiate a
read cycle of Read Register 0 to detect an incoming char-
acter before jumping to a data handler routine.
2-16
Receive Character Available
Receive Overrun
Framing Error
End of Frame (SDLC)
Parity Error (If enabled)
Transmit Buffer Empty
Zero Count
DCD
SYNC/HUNT
CTS
Tx Underrun/EOM
Break/Abort
Figure 2-9. ESCC Interrupt Sources
INT on first Rx Character
or Special Condition
External/Status
2.4.3 Interrupts
Each of the SCC’s two channels contain three sources of
interrupts, making a total of six interrupt sources. These
three sources of interrupts are: 1) Receiver, 2) Transmit-
ter, and 3) External/Status conditions. In addition, there
are several conditions that may cause these interrupts.
Figure 2-9 shows the different conditions for each interrupt
source and each is enabled under program control. Chan-
nel A has a higher priority than Channel B with Receive,
Transmit, and External/Status Interrupts prioritized, re-
spectively, within each channel as shown in Table 2-8. The
SCC internally updates the interrupt status on every PCLK
cycle in the Z85X30 and on /AS in the Z80X30.
Transmitter
Receiver
Interrupt
Interrupt
Interrupt
Sources
Sources
Receive Channel A
Transmit Channel A
External/Status Channel A
Receive Channel B
Transmit Channel B
External/Status Channel B
Source
INT on all Rx Character
or Special Condition
Rx Interrupt on Special
Condition Only
Table 2-8. Interrupt Source Priority
Interrupt
SCC
UM010901-0601
Highest
Lowest
Related parts for Z85C3008VSG
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Cmos Scc Serial Communications Controller
Manufacturer:
ZiLOG Semiconductor
Datasheet:
Part Number:
Description:
Communication Controllers, ZILOG INTELLIGENT PERIPHERAL CONTROLLER (ZIP)
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
KIT DEV FOR Z8 ENCORE 16K TO 64K
Manufacturer:
Zilog
Datasheet:
Part Number:
Description:
KIT DEV Z8 ENCORE XP 28-PIN
Manufacturer:
Zilog
Datasheet:
Part Number:
Description:
DEV KIT FOR Z8 ENCORE 8K/4K
Manufacturer:
Zilog
Datasheet:
Part Number:
Description:
KIT DEV Z8 ENCORE XP 28-PIN
Manufacturer:
Zilog
Datasheet:
Part Number:
Description:
DEV KIT FOR Z8 ENCORE 4K TO 8K
Manufacturer:
Zilog
Datasheet:
Part Number:
Description:
CMOS Z8 microcontroller. ROM 16 Kbytes, RAM 256 bytes, speed 16 MHz, 32 lines I/O, 3.0V to 5.5V
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Low-cost microcontroller. 512 bytes ROM, 61 bytes RAM, 8 MHz
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
Z8 4K OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
CMOS SUPER8 ROMLESS MCU
Manufacturer:
Zilog, Inc.
Datasheet:
Part Number:
Description:
SL1866 CMOSZ8 OTP Microcontroller
Manufacturer:
Zilog, Inc.
Datasheet: