Z86D7308VSC1987 Zilog, Z86D7308VSC1987 Datasheet - Page 65

• Manufacturer Part Number: Z86D7308VSC1987
• Description: IC 32K OTP 3 VOLT 44-PLCC
• Manufacturer: Zilog
• Series: Z8® IRr

Specifications of Z86D7308VSC1987

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: Brown-out Detect/Reset, LVD, POR, WDT
• Number Of I /o: 31
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: OTP
• Ram Size: 236 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -
• Connectivity: -

PS019401-1102
Stop-Mode Recovery Register (SMR)
This register selects the clock divide value and determines the mode of Stop-
Mode Recovery (Figure 34). All bits are write only except bit 7, which is read only.
Bit 7 is a flag bit that is hardware set on the condition of STOP recovery and reset
by a power-on cycle. Bit 6 controls whether a low level or a high level at the XOR-
gate input is required from the recovery source. Bit 5 controls the reset delay
after recovery. Bits D2, D3, and D4 or the SMR register specify the source of the
Stop-Mode Recovery signal. Bits D0 determines if SCLK/TCLK are divided by 16
or not. The SMR is located in Bank F of the Expanded Register Group at address
0Bh
Figure 34. Stop-Mode Recovery Register
D7
* Default setting after reset
* * Default setting after reset and stop-mode recovery
* * * At the XOR gate input
SMR (0F) 0B
.
D6
D5
D4
P
D3
R
E
D2
L
D1
I
M
D0
I
N
A
40/44/48-Pin Low-Voltage IR OTP
SCLK/TCLK Divide-by-16
0 OFF * *
1 ON
Reserved (Must be 0)
Stop-Mode Recovery Source
000 POR Only *
001 Reserved
010 P31
011 P32
100 P33
101 P27
110 P2 NOR 0-3
111 P2 NOR 0-7
Stop Delay
0 OFF
1 ON *
Stop Recovery Level * * *
0 Low *
1 High
Stop Flag
0 POR *
1 Stop Recovery * *
R
Y
Z86D73
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