ZGP323HEH4804G Zilog, ZGP323HEH4804G Datasheet - Page 28
ZGP323HEH4804G
Manufacturer Part Number
ZGP323HEH4804G
Description
IC Z8 GP MCU 4K OTP 48SSOP
Manufacturer
Zilog
Series
Z8® GP™r
Specifications of ZGP323HEH4804G
Core Processor
Z8
Core Size
8-Bit
Speed
8MHz
Peripherals
HLVD, POR, WDT
Number Of I /o
32
Program Memory Size
4KB (4K x 8)
Program Memory Type
OTP
Ram Size
237 x 8
Voltage - Supply (vcc/vdd)
2 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
48-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Connectivity
-
Other names
269-4348
ZGP323HEH4804G
ZGP323HEH4804G
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The upper nibble of the register pointer (see
group, of 16 bytes in the register file, is accessed out of the possible 256. The lower nibble
selects the expanded register file bank and, in the case of the Z8 GP family, banks 0, F, and
D are implemented. A
addressed. Any other value from
register bank.
Example: Z8 GP: (See
R253 RP = 00h
R0 = Port 0
R1 = Port 1
R2 = Port 2
R3 = Port 3
But if:
R253 RP = 0Dh
R0 = CTR0
R1 = CTR1
R2 = CTR2
R3 = Reserved
The counter/timers are mapped into ERF group D. Access is easily performed using the
following:
R253 RP
D7
Default Setting After Reset = 0000 0000
LD
for access to bank D
register group 0)
LD
LD
D6
D5
D4
Figure 14. Register Pointer
0H
D3
in the lower nibble allows the normal register file (bank 0) to be
Figure 13
D2
1H
D1
to
on page 22)
RP, #0Dh
R0,#xx
1, #xx
FH
D0
exchanges the lower 16 registers to an expanded
Figure
Expanded Register
File Pointer
Working Register
Pointer
14) selects which working register
Product Specification
; Select ERF D
; (working
; load CTR0
; load CTR1
Functional Description
ZGP323H
23
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