Z16C3516VSG Zilog, Z16C3516VSG Datasheet - Page 143

• Manufacturer Part Number: Z16C3516VSG
• Description: IC 16MHZ Z8500 CMOS ISCC 68-PLCC
• Manufacturer: Zilog
• Series: IUSC™r

Specifications of Z16C3516VSG

• Controller Type: Serial Communications Controller (SCC)
• Interface: USB
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 50mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 68-LCC (J-Lead)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-4690-5; Z16C3516VSG

UM011001-0601
;*
;*
;*
;*
.z800
*include 180macro.lib
;SCC
Registers
scc_ad:
scc_ac:
scc_bd:
scc_bc:
scc_a:
scc_cont:
scc_cont:
org
inttest:
wait_loop:
wait_here:
;subroutine to initialize scc registers
;initialization table format is
;register number, then followed by the data to be written
;and the register number is 0ffh, then return
initscc:
init0:
Table 12. SCC Test Program – Interrupt for 180/SCC Application Board (Under Mode2 Interrupt)
B register returns status info:
Bit D0: current /cts stat
D1set: /cts int received
if
else
endif
09000h
;Read in Z180 register names and
;macro for Z180 new instructions
equ
equ
equ
equ
equ
scc_a
equ
equ
;top of user ram area
ld
ld
ld
im
call
ld
ei
bit
jr
jr
ld
ld
cp
ret
out
inc
ld
out
inc
jr
0C3h
0C2h
0C1h
0C0h
000h
scc_ac
scc_bc
sp,top_of_sp
a,high sccvect and 0ffh
i,a
2
initscc
b,0
1,b
z,wait_loop
$
hl,scctab
a,(hl)
0ffh
z
(scc_cont),a
hl
a,(hl)
(scc_cont),a
hl
init0
The Z180™ Interfaced with the SCC at MHZ
;addr of scc ch a - data
;addr of scc ch a - control
;addr of scc ch b - data
;addr of scc ch b - control
;set 0ffh to test ch a
;clear 00h to test ch b.
;init sp
;init i reg
;set interrupt mode 2
;initialize scc
;clear status
;enable interrupt
;check int status
;if not, loop again
;interrupt has been received
;you can set breakpoint here!
;initialize scc
;get register number
;reached at the end of table?
;yes, return.
;write it
;point to next data
;get the data to be written
;write it
;point to next data
;then loop
Application Note
7-23
7