Z86D99 ZILOG [Zilog, Inc.], Z86D99 Datasheet - Page 17
Z86D99
Manufacturer Part Number
Z86D99
Description
Low-Voltage Micro controllers with ADC
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z86D99.pdf
(102 pages)
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PS003807-1002
Memory (ROM/OTP and RAM)
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The Z8 uses a 16-bit Program Counter (PC) to determine the sequence of current
program instructions. The PC is not an addressable register.
Peripheral registers are used to transfer data, configure the operating mode, and
control the operation of the on-chip peripherals. Any instruction that references
the register file can access the peripheral registers. The following are peripheral
control registers:
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In addition, the four port registers are considered to be peripheral registers. The
following are port control registers:
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The functions and applications of the control and peripheral registers are
explained in “Control and Status Registers” on page 52.
There are four basic address spaces available to support a wide range of configu-
rations:
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The Z8 standard register file totals up to 256 consecutive bytes organized as 16
groups of 16 eight-bit registers. These registers consist of I/O port registers,
Interrupt Control (IPR, IMR, and IRQ)
Stop Mode Recovery (SMR, P2SMR, and P5SMR)
Low-Battery Detect (LB) Flag
Analog/Digital Converter (ADCCTRL and ADCDATA)
T1 Timer/Counter (TMR, T1, and PRE1)
T8 Timer/Counter (CTR0, HI8, LO8, TC8H, and TC8L)
T16 Timer/Counter (CTR2, HI16, LO16, TC16H, and TC16L)
T8/T16 Control Registers (CTR1and CTR3)
Port Configuration Registers (P456CON and P3M)
Port 2 Control and Mode Registers (P2 and P2M)
Port 4 Control and Mode Registers (P4 and P4M)
Port 5 Control and Mode Registers (P5 and P5M)
Port 6 Control and Mode Registers (P6 and P6M)
Program memory (on-chip)
Standard register file
Expanded register file
Executable RAM
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Z86D990/Z86D991 OTP and Z86L99X ROM
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Low-Voltage Microcontrollers with ADC
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