ZGP323LEP4008C Zilog, ZGP323LEP4008C Datasheet - Page 26

• Manufacturer Part Number: ZGP323LEP4008C
• Description: IC Z8 GP MCU 8K OTP 40DIP
• Manufacturer: Zilog
• Series: Z8® GP™r

Specifications of ZGP323LEP4008C

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: HLVD, POR, WDT
• Number Of I /o: 32
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 237 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 40-DIP (0.620", 15.75mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Other names: 269-3590

PS023709-0208
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
R253 RP = 00h
R0 = Port 0
R1 = Port 1
R2 = Port 2
R3 = Port 3
But if:
R253 RP = 0Dh
R0 = CTRL0
R1 = CTRL1
R2 = CTRL2
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
: Z8 GP (see
D5
D4
Figure 14. Register Pointer
Figure 13
0H
D3
in the lower nibble allows the normal register file (bank 0) to be
D2
1H
on page 21)
D1
to
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 CTRL0
; load CTRL1
Functional Description
ZGP323L
22